Question

QI1 A car of mass 1000 kg moving with a velocity of 54 km/h hits a wall and comes to rest
in 5 seconds, Find the force exerted by the car on the wall.

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Answer 1

m= 1000kg

v=54km/h

 =54x5/18 = 15 m/s

t= 5s

a=v/t

 =15/5= 3m/s^2

f=ma

=1000x3

=3000N

Answer 2

Answer:

-3000 is the force exerted by car.