Question

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A truck of mass 5000 kg moving with a velocity of mass 90 km/h hits a wall

and comes to rest in 25 second find the force exerted by the car on the wall.

Don't copy from Google or any other app.

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Answer 1

Answer:

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Step-by-step explanation:

Initial Velocity= 90km/h=>25m/s

Final Velocity=0 =>(because it comes to rest)

Mass=5000Kg

Time=25 seconds

To find out Acceleration,

v=u+at

Substitute the Values

0=25m/s+(a)(25sec)

0=25m/s+25a

-25a=25

a=25/-25

a=-1m/s sq

Now,Calculate the force

F=ma

=5000kg×(-1m/s)

=5000kg×(-1m/s)F=(-5000N)