A sooterist moving with a speed of `36kmh^(-1)` sees a child standing in the middle of the road. He applies the brakes and brings the scooter to rest in 5 s just in time to save child. Calculate the average retarding force on the vehicle, if mass of the vehicle and driver is 300 kg.

The driver of a three wheeler moving with a speed of 36 km//h sees a child standing in the middle of the road and brings his vehicle to rest in 4 s just in time to save the child What is the average retarding force on the vechicle ? The mass of three wheeler is 400 kg and mass of the driver is 65 kg .

on turning a corner a car driving at 36kmh^(-1) finds a child on the road 55 m abead. He immediately applies brakes,so as to stop within 5 m of the child . Calculate the retardation produced and the time taken by the car to stop .

On turning a corner, a motorist rushing at 44ms^(-1) finds a child on the road 100 m away. He applies the brakes so as to stop the motorcar within 1 m of the child. Calculate the time required to stop.

A hammer of mass 1 kg moving with a speed of 6 ms^(-1) strikes a wall and comes to rest in 0.1 sec. Calculate Average retardation of the hammer

A hammer of mass 1 kg moving with a speed of 6 ms^(-1) strikes a wall and comes to rest in 0.1 sec. Calculate Average retarding force that stops the hammer

A car is travelling on road at 50kmh^-1 . The driver applies brakes and brings the car to rest. Which frictional force does more work: (a) the force between the wheels and the brakes or (b) the force between the wheels and the road?

A driver is driving a car at a speed of 90km/h. he spots a child standing on his way and decided to apply the brakes but it took him 0.3s to actually apply the brakes. If the retardation produced by the brakes is 10m//s^(2) , calcualtion the total distance covered by car before coming to rest

A scooter of mass 150 kg is moving with a uniform velocity of 108 km/h. Then the force required to stop he vehicle in 10s is

A hammer of mass 1 kg moving with speed of 6 ms^(-1) strikes a wall and comes to rest in 0.1 s . Calculate (i) the impules of force (ii) the retardation of the hammer , and (iii) the retarding force that stops the hammer .