Motion Numericals

A racing car at rest accelerates uniformly to a velocity of 144 km/hr in 20 s. Find value of acceleration of the car.

• 5 m/s²

• 2 m/s²

• 0.2 m/s²

• 0.5 m/s²

The brakes applied to a running train produce an acceleration of 0.6 m/s² in a direction opposite that of motion. If train takes 60s to stop after application of brakes, calculate distance travelled before coming to rest.

• 1080 m

• 1200 m

• 1500m

• 2156 m

Starting from a stationary position, Satvik attain a velocity of 20 m/s in 4 s, while competing for a race. Calculate his acceleration during the period. Assume the acceleration to be unifrom.

• 2 m/s²

• 3 m/s²

• 8 m/s²

• 5 m/s²

Usha swims in a 90m long pool. She covers 180m in 1 minute by swimmimg one to other and back along the same straight line. Find the average velocity.

• 3 m/s

• 1.8 m/s

• 0 m/s

• 2 m/s

A car accelerates uniformly from from 5m/s to 10 m/s in 5s. Calculate the distance covered by the car in that time.

• 32 m

• 25 m

• 37.5 m

• 40 m

A particle is moving in a circular path of radius r. The distance after half a circle would be

• 2r

• 0

• $\pi r$
  

• $2\pi r$

Area under velocity - time graph represents

• distance

• speed

• acceleration

• velocity

A car driver driving at a speed of 90km/hr applies brakes and brings car to rest in 20s. The acceleration of car is

• 1 m/s²

• -1.5 m/s²

• -1.25 m/s²

• 2.5 m/s²

The numerical ratio of displacement to distance is

• always less than 1

• always equal to 1

• always more than 1

• equal or less than 1

A racing car has an uniform acceleration of 4 m/s^2. What distance will it travel in 10s before coming to rest.

• 110 m

• 200m

• 120 m

• 220m