Middle School

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A 1500 kg car originally moving at 10 m/s crashes into a wall and comes to rest in 0.25 s. What is the magnitude of the impulse given to the car?

A. 37.5 kg·m/s
B. 150 kg·m/s
C. 15000 kg·m/s
D. 60000 kg·m/s

Answer :

Answer: The correct answer is

C. 1500kg m/s

Explanation:

Step one

Given data

M

m=1500kg

u=10m/s

v=0m/s

t=0.25sec

Step two

We know that formula for impulse is given as

F*t=m(v-u)--------impulse

Substituting our data in to the equation we have

F*t=1500(10-0)

F*t=15000kg m/s

Or impulse is 15,000N

What is impulse?

The impulse of a force can be defined as the change of momentum of an object when the object is acted upon by a force for an interval of time.

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