Question

A car of mass 1000 kg moving with a velocity of 45 km per hour collides with a tree and comes to stop in 5 second what will be the force exerted by the car on the tree

Answer 1

Answer:

your are being asked to deploy this equation:

force = mass × acceleration, or f= m*a

m=1000 kg

velocity 45 km/hr =12.5 km/s. so

acceleration a = 2.5 m/s ^2 therefore

f=m*a = 1000 * -2.5 = -2500 Newtons

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