(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Physics

Interpret the following graph:

What happens to the stepwise increasing speed-time graph when the size of each step is made very small?

A body has an acceleration of -3.5 ms^-2. What is its retardation?

Sketch the shape of the velocity-time graph for a body moving with:
Uniform acceleration.

A car accelerates uniformly from a velocity of 18 km/h to 36 km/h in 15 min. What is its acceleration?

Convert the following acceleration:
7200 km/h² into m/s²

Convert the following acceleration:
 1/36 m/s² into km/h²

A car is moving with a speed of 50 km/h. One second later, its speed is 55 km/h. What is its acceleration?

The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Acceleration.

The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Deceleration

A car accelerates to a velocity of 30 m/s in 10 s and then decelerates for 20 s so that it stops. Draw a velocity-time graph to represent the motion and find:
The acceleration.

A car accelerates to a velocity of 30 m/s in 10 s and then decelerates for 20 s so that it stops. Draw a velocity-time graph to represent the motion and find:
The Deceleration.

A car accelerates to a velocity of 30 m/s in 10 s and then decelerates for 20 s so that it stops. Draw a velocity-time graph to represent the motion and find:
Distance travelled

Figure represents graphically the velocity of a car moving along a straight road over a period of 100 hours.

Calculate the acceleration along AB and the retardation along BC.

A piece of wax floats in brine. What fraction of its volume will be immersed?
R.D. of wax = 0.95, R.D. of brine = 1.1.