Question

akka of mass 100 kg moving with a velocity of 54 km per hour hits a wall and comes to rest in 5 second the force exerted by by the car on wall is​

Answer 1

Answer:

300N

Explanation:

given,

Mass of a car = 100kg,

velocity of car = 54km/hr = 54 *(5/18) = 15m/s,

it come to rest in 5 secs after hitting a wall.

we know that ,

acceleration is the rate of change of Velocity,

therefore, a = 15/5 = 3m/s^2,

Force,F = m*a

= 100*3,

= 300 kg-m/s^2,

= 300 Newtons.

hope it helps u...