## Q1 When a bus suddenly takes a turn, the passengers are thrown outwards because of

• (a) Inertia of direction
• (b) Inertia of motion
• (c) Inertia of rest
• (d) Acceleration of motion

• (a) Inertia of direction

## Q2 Two bodies of equal mass, one in motion and another is at rest, then which is correct for these bodies

• (a) both possess no inertia
• (b) both possess different inertia
• (c) both have same inertia
• (d) can’t say anything

• (c) both have same inertia, because inertia is a factor of mass only and does not depend upon velocity

• (a) True
• (d) False

• (a) True

## Q4 The mud guards over the wheel of car  is on the basis of inertia of rest.

• (a) True
• (d) False

• (d) False  ; Due to  inertia of motion.

## Q5  Inertia is a physical quantity.

• a) True
• b) False

• b)  False it is only a property of the body which depends on mass of the body)

## Q6 When a horse at full gallop stops suddenly, the rider falls forward on account of

• a) inertia of motion.
• b) inertia of rest
• c) inertia of direction
• d) all of these

• a) inertia of motion.

## Q7  A particle is moving with a constant speed along straight-line path. In which situation there is no need of force

• (a) Increase its speed
• (b) Decrease the momentum
• (c) Change the direction
• (d) Keep it moving with uniform velocity

• (d) Keep it moving with uniform velocity

## Q8 Newton’s first law defines

• (a) momentum and acceleration
• (b) inertia and force
• (c) force and velocity
• (d) Momentum and energy

• (b) inertia & force

## Q9.  What causes the motion of a body which is initially in the state of rest?

• (a) Force
• (b) Displacement
• (c) Speed
• (d) Velocity

• (a) Force

## Q10 Newton’s first law of motion is also called law of

• a) Law of momentum
• b) Law of Inertia
• c) Law of conservation of energy
• d) None of these

• b) Law of Inertia