Page 1 - HA

OBJECTIVE
MCQ

Q1. What is Inertia? (AVG)
A. The tendency of an object to resist any change in its motion.

B. A non zero net force, which changes an object`s motion.
C. Equal forces acting on an object in opposite direction.

D. An object at rest stays at rest and an object in motion stays in motion unless acted on by
an unbalanced force.

Q2.A coin placed on acard (rested at the edges of the glass) remains at rest because of
A. Inertia of rest

B. Two forces act on the coin which balance each other
C. No unbalanced force acts on it

D. All of these
Fill in the blanks (BOARD)

1._________is the reluctance any material object has to change in its state of motion.
2.______gives qualitative definition of force.

3._______of a body is the measure of its inertia

SUBJECTIVE
1. Why do the blades of an electric fan continue to rotate for some time after the current is
switched off? (AVG)
2. Ben Too close is being chased through the woods by a bull moose that he was attempting
to photograph. The enormous mass of the bull moose is extremely intimidating. Yet, if Ben
makes a zigzag pattern through the woods, he will be able to escape, Justify. (HOTS)
3.A 2-kg object is moving horizontally with a speed of 4 m/s. How much net force is required
to keep the object moving at this speed and in this direction? (HOTS)
4.Arrange the items in order of increasing inertia? Bicycle, bus, Train, car, Scooter
(BOARD)

5.(AVG)

S.No Questions Reason

1 Why can dust be removed by shaking it,
or beating it by a carpet?

2 Why do passengers in the bus tend to
fall back when it starts suddenly?

1