Home
Class 9
PHYSICS
A cyclist is travelling at 15 m s^(-1) ....

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 ?

Text Solution

Verified by Experts

62.5 m `s^(-2)`
Promotional Banner

Topper's Solved these Questions

  • MOTION

    LAKHMIR SINGH & MANJIT KAUR|Exercise SAMPLE PROBLEM|1 Videos

  • MOTION

    LAKHMIR SINGH & MANJIT KAUR|Exercise VERY SHORT ANSWER TYPE QUESTIONS|3 Videos

  • MODEL TEST PAPER 5

    LAKHMIR SINGH & MANJIT KAUR|Exercise Section B|2 Videos

  • SOUND

    LAKHMIR SINGH & MANJIT KAUR|Exercise Value Based Questions|20 Videos

Similar Questions

Explore conceptually related problems

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 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 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 ?

A car is travelling at 20 m/s along a road. A child runs out into the road 50 m ahead and the car driver steps on the brake pedal. What must the car's deceleration be if the car is to stop just before it reaches the child ?

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.

Mrs. Sharma has 24 apples. She uses 1/4 of them. How many apples does she use? How many does she have left?

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 :

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.