On observing a sign board about speed limit,a driver applies brakes and reduces his speed from 100m/s to 50m/s though a distance of 50m .The uniform retardation provided by the brakes (in m/`s^(2)`) will be ?

A car was movig at a rate of 18 kmh^(-1) . When the brakes were applied, it comes to rest in a distance of 100 m. Calculate the retardation produced by the brakes.

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

When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then retardation will be :

A driver decreases the speed of a car from 25 m/s to 10 m/s is 5 seconds. Find the acceleration of the car.

On a level road, a scooterist applies brakes to slow down from a speed of 10 m/s to 5 m/s. If the mass of the scooterist and the scooter be 150 kg, calculate the work done by the brakes. (Neglect air resistance and friction)

The velocity of a bullet is reduce from 200 m//s to 100m//s while travelling through a wodden block of thickness 10 cm Assuming it to be uniform, the retardation will be

Find the initial velocity of a car which is stopped in 10 seconds by applying brakes. The retardation due to brakes is 2.5 m/ s^(2) .

A 400kg car attains a speed of 50m/s from rest in 20s. The power developed in the engine will be