Mechanics

Question 1 of 10

A particle starts from rest with acceleration a = 6t m/s². Its displacement after 2 s is

Question 2 of 10

A particle moves so that s = t³ − 6t² + 9t. It is momentarily at rest when t =

Question 3 of 10

The impulse of a 10 N force acting for 0.5 s is

Question 4 of 10

A body projected at 20 m/s at 30° to the horizontal reaches a maximum height of (g = 10 m/s²)

Question 5 of 10

Two forces of 6 N and 8 N act at right angles. Find their resultant.

Question 6 of 10

Two masses 3 kg and 2 kg hang over a smooth pulley. The acceleration is (g = 10 m/s²)

Question 7 of 10

A car accelerates from 10 m/s to 30 m/s over 200 m. Its acceleration is

Question 8 of 10

Two forces of 3 N and 4 N act at right angles on a particle. Find the magnitude of their resultant.

Question 9 of 10

A ball is projected horizontally at 10 m/s from a height of 20 m (g = 10 m/s²). The time to reach the ground is

Question 10 of 10

The momentum of a 3 kg body moving at 4 m/s is