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

Why does the velocity of a stone thrown vertically upwards decreases?

Two friends leave Delhi for Chandigarh in their cars. A starts at 5 am and moves with a constant speed of 30 km/h, whereas B starts at 6 am and moves with a constant speed of 40 kmh^-1. Plot the distance-time graph for their motion and find at what time the two friends will meet and at what distance from Delhi.

A body moves along a straight road with a speed of 20 m/s and has a uniform acceleration of 5 m/s². What will be its speed after 2 s?

Write down the type of motion of a body in each of the following distance time-graph.

Define speed. What is its S.I. unit?

What does the slope of a displacement-time graph represent?

Draw a displacement-time graph for a boy going to school with uniform velocity.

What does the slope of velocity-time graph represent?

Draw a velocity-time graph for the free fall of a body under gravity starting from rest. Take g = 10m s^-2

For uniform motion _________

From the displacement-time graph of a cyclist given below in the Figure, find The time after which he reaches the starting point .

The acceleration produced in a body by a force of given magnitude depends on

A force acts for 10 s on a stationary body of mass 100 kg, after which the force ceases to act. The body moves through a distance of 100 m in the next 5 s. Calculate : The acceleration produced by the force

Figure shows the velocity-time graph of a particle of mass 100 g moving in a straight line. Calculate the force acting on the particle.
(Hint : Acceleration = Slope of the v-t graph)