Question

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.​

Answer 1

Answer:

-5000N

Explanation:

I have attached a photo with this .u can see the solution over it

Answer 2

Explanation:

Initial velocity,u=90km/h=25m/s

Final velocity,v=0(As the truck comes to rest)

Time,t=25s

Acceleration,a=?

As we know that,v=u+at

0=25+25a

-25=25a

a=-1m/s^2

Mass,m=5000kg

Acceleration,a=-1m/s^2

Force,f=?

As we know that, f=m×a

f=5000×-1

f=-5000Newton(N)