[" Q5.A cyclist is travelling at "15m/s" .She applies brakes so that she does not collide with a wall "18m" away."],[" What deceleration must she have? "]

A cyclist is travelling at 15 m s^(-1) . She applies brakes so that she does not collide with a wall 18 m away. What deceleration must she have ?

A cylist travelling at 10m/s applies brakes and stops in 25m m. The graph shows the magnitude of the braking force versus the distance travelled. What is the total mass of bike and cyelist?

A driver travelling at 90 kph applied the brakes for 5 s. If the braking acceleration was 2 m//s^(2) , what was her final speed ?

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 :

Two cars A and B travelling with speed 20m/s and 10m/s respectively applied brakes, so that A comes to rest in 15 second and B in 7.5s. From the graph determine which of the two cars travelled further after brakes were applied and by how much distance it travelled?

A car is traveling at 7.0 m/s when the driver applies the brakes. The car moves 1.5 m before it comes to a complete stop. It the car had been moving at 14 m/s, how far would it have continued to move after the brakes were applied ? Assume the braking force is constant .

A person travelling at 43.2 km/h applies the brake giving a deceleration of 6.0 m/s^2 to his scooter. How far will it travel before stopping?

Two trains A and B are approaching each other on a straight track, the former with a uniform velocity of 25 m/s and other with 15m/s, when they are 225 m a part brakes are simultaneously applied to both of them. The deceleration given by the brakes to thetrain B increases linearly with time by 0.3 m//s^(2) every second, while the train A is given a uniform deceleration, (a) What must be the minimum deceleration of the train A so that the trains do not collide ? (b) What is the time taken by the trains to come to stop ?

Two trains A and B are approaching each other on a straight track, the former with a uniform velocity of 25 m/s and other with 15m/s, when they are 225 m a part brakes are simultaneously applied to both of them. The deceleration given by the brakes to thetrain B increases linearly with time by 0.3 m//s^(2) every second, while the train A is given a uniform deceleration, (a) What must be the minimum deceleration of the train A so that the trains do not collide ? (b) What is the time taken by the trains to come to stop ?