Question

a body waiting 5 kg moves with a velocity of 10 metre per second and stops after 2 seconds find the initial and final momentum of the body.​

Answer 1

Answer: initial velocity is 0m/s²

Final velocity is 0 m/s²

Explanation:

Acceleration = Final velocity - initial Velocity Dividing by time taken

Final velocity = initial velocity divided by Time taken

∆ So, substitute the values

Final velocity = 0 divided by 2 = 0

Answer 2

Answer:

A body of mass 5kg is moving with a velocity of 10m/s. What will be the force required to stop it in 2 seconds?

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Given Data:-

mass= 5kg

Initial velocity= 10 m persecond

Final Velocity= 0

Time= 2s

Required:-

F=?

Solution:-

First of all. To find acceleration we use first equation of motion.

a= vf - vi/ t

a= -5 m persecond square

Now Using Newton's second law of motion.

F= ma

F= -25N. The negative sign indicate that the force required to stop the body would be opposite to direction of the body

Explanation:

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