MotionMARK 1Q 1 Define centripetal force. Q 2 When do we say the acceleration of a body is zero?Q 3 What is meant by non-uniform acceleration?Q 4 What is meant by uniform acceleration?Q 5 Define acceleration.Q 6 When does the velocity and speed of a moving body become identical?Q 7 What is meant by average velocity of a body moving in a particular direction?Q 8 When does the velocity change?Q 9 Define the term displacement.Q 10 Define the term distance.Q 11 What is a scalar quantity?Q 12 How is the position of an object described?Q 13 What is meant by body in motion?Q 14 What is meant by body at rest?Q 15 Why is uniform linear motion not an accelerated motion?Q 16 What is positive acceleration and negative acceleration?Q 17 What is meant by non-uniform velocity?Q 18 What is meant by uniform velocity?Q 19 Define velocity.Q 20 Define non-uniform motion.Q 21 Define uniform motion.Q 22 Define a vector quantity.

MARK 2Q 23 What is meant by angular acceleration? Q 24 What is meant by angular velocity? Write its SI unit.Q 25 Why is the motion of Satellites around their planets considered an accelerated motion?Q 26 A racing car has a uniform acceleration of 4 ms-2. What distance will it cover in 10 seconds after the start?Q 27 A bus covers a distance of 250 km from Delhi to Jaipur towards West in 5 hours in the morning and returns to Delhi in the evening covering the same distance of 250km in the same time of 5 hours. Find (a) Average speed (b) Average velocity of the bus for the whole journey.Q 28 A car travels a distance of 200 km from Delhi to Ambala towards North in 5 hours. Calculate (i) Speed (ii) Velocity of car for this journey.Q 29 Derive 3 equations of motion graphically. (6)