A ball of mass 2 kg is moving with a speed of +6 m/s directly towards
another ball of mass 1 kg moving with a speed of -4 m/s. If they collide
inelastically, what will be the speed of the resulting 3 kg ball
immediately after the collision?

Answer:

m = 15.15 kg

Explanation:

Newton's Second Law of motion states that when an unbalanced force is applied on a body, an acceleration is produced in it in the direction of force. The component of force along the horizontal direction here, will be given by the Newton's Second Law as:

Fx = ma

F Cosθ = ma

where,

F = Magnitude of Force = 85 N

θ = Angle with horizontal = 27°

m = mass of object = ?

a = acceleration of object = 5 m/s²

Therefore,

85 N Cos 27° = m(5 m/s²)

m = 75.73 N/5 m/s²

m = 15.15 kg

The parachutist is falling at a constant speed, so the net force acting on them is zero. The only forces acting on the parachutist are their own weight (magnitude w, pointing downward) and the drag produced by the parachute (mag. d, pointing upward). By Newton's second law,

d - w = 0

or d = w. The parachutist's weight is

w = (70 kg) (9.80 m/s²) = 686 N

so that the total upward force is also 686 N.

Answer:

Diagram A

Explanation:

When an object is travelling in a circular path it has an acceleration called centripetal acceleration, even if it is moving with uniform speed. This acceleration is attributed to the object due to change in the direction of velocity at every instant during the motion.

The direction of the velocity of the object is tangent to the circular path at every instant and if the object beaks free of the circular motion, such as breaking of the string, then it will go in the direction tangent to the circle at that instant. Hence, the diagram that best shows the direction ball will travel is:

Diagram A

Answer:

980 cm/m²

Explanation:

there are 100 cm in a meter

Answer:

Explanation:

R + 4.17sin(40) = mg

R = mg - 4.17sin(40)

= 2(9.8) - 4.17sin(40)

= 16.91957567

= 16.92 N

A 2.00 kg block is pulled across a flat, friction less floor with a 4.17 N force directed 40.0° above horizontal.  The normal force acting on the block  16.92 N.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Given in the question,

R + 4.17 sin(40) = mg

R = mg - 4.17 sin(40)

  = 2(9.8) - 4.17 sin(40)

  = 16.91957567

  = 16.92 N

A 2.00 kg block is pulled across a flat, friction less floor with a 4.17 N force directed 40.0° above horizontal.  The normal force acting on the block  16.92 N.

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Answer:

Vf = 2.12 [m/s]

Explanation:

To solve this problem we must first find acceleration using Newton's second law, using mass and force.

ΣF = m*a

where:

F = force = 1.5 [N]

m = mass = 0.2 [kg]

a = acceleration [m/s²]

Now clearing a, we have:

[tex]a = F/m\\a = 1.5/0.2\\a = 7.5 [m/s^{2}][/tex]

Now we must use the following expression of kinematics, to find the final speed, we must take into account that the initial speed is equal to zero, since the car starts from zero.

[tex]v_{f}^{2} =v_{o} ^{2} +2*a*x\\v_{f} ^{2} = 0 + (2*7.5*0.3)\\v_{f} = \sqrt{4.5}\\v_{f} = 2.12 [m/s][/tex]

Answer:

C. The robot fires the ball backward with a speed of 2 m/s.

Explanation:

The robot fires the ball backward with a speed of 2 m/s.

To find the correct statement among all the options, we need to know about the relative velocity.

Velocity is a relative physical quantity that depends on the chosen frame of reference.

Thus, we can conclude that the robot fires the ball backward with a speed of 2 m/s.

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Answer: it’s Fewer oscillations.

Explanation:

Answer:

kinetic energy from wind turns blades on wind turbine → wind turbine blades turn generator → generator changes kinetic energy to electricity

Explanation:

The order of steps in the energy conversion during the production of electricity from wind turbine are as follows:

1. First of all, the wind transmits its kinetic energy to the turbine blades by striking the blade.

2. The turbine blades are connected to a generator. The kinetic energy of the turbine blades is utilized to turn the generator shaft.

3. The generator then converts the kinetic energy of the blades into electricity.

Hence, the correct option is:

kinetic energy from wind turns blades on wind turbine → wind turbine blades turn generator → generator changes kinetic energy to electricity

Answer:

B

explain: edge test

We are given:

initial velocity (u) = 0 m/s

time (t) = 4 seconds

acceleration (a) = 1.3 m/s²

displacement (s) = x m

Solving for the displacement:

from the second equation of motion

s = ut + 1/2 at²

replacing the variables with the given values

x = (0)(4) + 1/2 (1.3)(4)(4)

x = 1/2 * 20.8

x = 10.4 m

Answer:

x=10.39 m/s

y = 6 m/s

Explanation:

Components of a Vector

A vector can be expressed in several forms, including the rectangular and the polar form.

The rectangular form uses the x-y coordinates of the vector, being the right and up directions considered as positive.

The polar form uses the magnitude r and the angle it forms with the positive x-direction.

Given the polar form (r,θ), we can calculate the rectangular coordinates as follows:

[tex]x=r\cos\theta\\[/tex]

[tex]y=r\sin\theta[/tex]

The soccer ball is kicked with an initial speed of v=12 m/s and an angle of 30 degrees. Thus the horizontal and vertical components are:

[tex]x=12~m/s\cos 30^\circ[/tex]

[tex]x=12~m/s\cdot 0.866[/tex]

x = 10.39 m/s

[tex]y=12~m/s\sin 30^\circ[/tex]

[tex]y=12~m/s\cdot 0.5[/tex]

y = 6 m/s

Answer:

Friction

Explanation:

Friction is a force that slows down moving objects. If you roll a ball across a shaggy rug, you can see that there are lumps and bumps in the rug that make the ball slow down. The rubbing, or friction, between the ball and the rug is what makes the ball stop rolling. External Force is required.

Answer:

Vo = 4.5 [V]

Explanation:

In order to calculate this Vo voltage, we must first calculate the current through the entire circuit. For this, we perform a sum of voltages equal to zero.

ΣV = 0

[tex]-9 +6*I+2*I+3 =0\\-6+8*I=0\\I = 6/8\\I=0.75[amp][/tex]

We again perform a sum of voltages equal to zero but this time we do not include the voltage source of 3V as well as the resistance of 2[ohm]. It is as if the circuit is open between the ports of Vo.

ΣV = 0

[tex]V_{o}-9+(6*0.75) = 0\\\\V_{o} = 4.5 [V][/tex]

Answer:

B, convert the orbital period to seconds

Explanation:

edge 2o2o

In order to calculate the tangential speed of the satellite,  Enrique should do first converted the orbital period to seconds. The correct option is b.

Any item moving along a circular path has a linear component to its speed called tangential velocity. An object's velocity is always pointed tangentially when it travels in a circle at a distance r from the center. Tangential velocity is the name given to this.

Satellites can go over the Earth's North and South Poles, orbit the equator, or travel anywhere in between. They travel thousands of miles into space or only a few hundred miles above the surface of the Earth to perform their orbits. Enrique has given:

r=3.8 x 108 m

T= 18 days

Therefore, the correct option is b. convert the orbital period to seconds.

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Answer:

Explanation:

The velocity of the spacecraft can be found by using the formula

[tex]v = \frac{p}{m} \\ [/tex]

p is the momentum

m is the mass

From the question we have

[tex]v = \frac{20000}{250} = \frac{2000}{25} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

If they lift less weight, each time then they will grow stonger.

Whereas if you lifted more weight than them, and you couldn't do it then that means they are actually stronger than you.

I hope this helps!!!!

If someone lifts less weight that is force due to gravity than you many times than they are powerful.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

If they lift less weight, each time then they will grow stonger.

Whereas if you lifted more weight than them, and you couldn't do it then that means they are actually stronger than you.

If someone lifts less weight that is force due to gravity than you many times than they are powerful.

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Answer:

unbalanced.

Explanation

ive taken the test and unbalanced is correct.

Answer:

unbalanced

Explanation:

bc i got it right on a quiz

Answer:

A

Explanation:

It is 35 minutes to the east of zero-hours right ascension. Explanation: The right ascension of a star basically determines the position of the star on the east to west co-ordinates system.

Answer:Answer is a

Explanation:

Answer:

3000N

Explanation:

hence, the force needed to accelerate the 1000kg car by 3m/s2 is 3000N

Answer:

28 m/s

Explanation:

1m / 0,035 s

v = 28.57 m/s

if you want km/h, multiply witz 3,6

102,85 km/h = 28,57 m/s

Answer:

Tension in the 55 degree cable  = 110.56 N

Tension in the 28.5 degree cable = 72.16 N

Explanation:

Decompose the two tensions T1 (on left cable) and T2(on right cable) in vertical and horizontal components using trigonometric functions sine and cosine. Then balance the forces in the vertical and in the horizontal as shown below:

Horizontal components acting on net horizontal force:

T1 cos(55) =T2 cos(28.5)

then  T1 = T2 (cos(28.5) / cos(55))

Vertical components acting on net vertical force:

T1 sin(55) + T2 sin(28.5) = 125

Now replace T1 with T2 (cos(28.5) / cos(55)) in the last equation:

T2 (cos(28.5) * sin(55)/ cos(55)) + T2 * sin(28.5) = 125

T2 ( cos(28.5) * tan(55) + sin(28.5)) = 125

solving for T2 we get: 72.16 N

now we use this T2 result in the substitution equation:

T1 = T2 (cos(28.5) / cos(55))

T1 = 110.56 N

Answer:

6

Explanation:

Answer:

Slant Hight

Explanation:

Answer:

3.33 m/s

Explanation:

Using the formula: s = d / t (where s is speed, d is distance, and t is time)

[Convert minutes to seconds then solve]

Half a minute is 30 seconds. Therefore:

s = 100 / 30 = 3.33 m/s

Answer: she did no work while she posed because she did not move the torch or the book

Explanation: just did it on edge

Answer:

Which describes the work Shani did while she posed?(assume the starting work position is when her hand is already raised )

She did more work with her right hand than with her left because the right was held up higher.

She did work while she posed because she was tired at the end of the session.

She did no work while she posed because she did not exert a force on anything.

Explanation:  January 2021 Edge test

Answer:

Positive and negative

Explanation:

In order to attract to form the ionic compound, those charges are needed

E.g

Na+ (sodium)

Cl- (chloride)

Which ultimately forms NaCl (sodium chloride) which is a ionic compound