Inertia

Q.

Why passengers are thrown outwards when a bus suddenly takes a turn?

Q. The physical quantity, which is the measure of inertia is:

1. mass
2. force
3. density
4. weight

Q.

Why is it called a moment of inertia?

Q. A person jumping out of a moving bus tends to roll forward, in the direction of the bus. This is due to the:

1. Inertia of rest
2. Inertia of motion
3. Inertia of direction
4. Force of gravity

Q. The resistance to change the state of motion depends on the ___ of an object.

1. Size
2. temperature
3. volume
4. mass

Q.

The mass of an object is the measure of its .......................... .

Q.

Why do we jerk wet clothes before spreading them on a line for drying? Explain

Q.

Two boys exerts forces of 40 N and 60 N in opposite directions on an object. The resultant force is:

Q.

Which has highest inertia? Solids made up of aluminum, steel or wood of same shape and volume?

Q.

Define inertia of rest and inertia of motion.

Q.

Question 19

Fig. shows a man with a parachute. Name the force which is responsible for his downward motion. Will he come down with the same speed without the parachute?

Q.

The passenger feels a jerk forward when a bus moving at a high speed suddenly stops. This happens due to

1. inertia of passenger

2. inertia of bus

3. gravitational pull of the Earth

4. none

Q.

Two balls of the same size but of different materials, rubber and iron are kept on the smooth floor of a moving train. The brakes are applied suddenly to stop the train. Will the balls start rolling? If so, in which direction? Will they move with the same speed? Give reasons for your answer.

Q.

The inertia of a body is the quantitative measure of its:

1. Velocity

2. Acceleration

3. Mass

4. Force

Q.

Give two examples of inertia of motion.

Q.

Give one example of inertia of direction.

Q. a apple falls down due to gravity of earth which pulls it down.so we think that tha apple falls down but can it be earth accelerating upwards to meet the apple ? if yes then by which frame of reference we will be able to see it?

Q.

There are three solids made up of aluminum, steel, and wood, of the same shape and same volume. Which of them would have the highest inertia?

1. Steel

2. Wood

3. Aluminum

4. None of these

Q.

How does the mass of a body change when it is taken into deep space?

Q.

Which of the following has the largest inertia?

1. A pin

2. An ink pot

3. Your physics book

4. Your body

Q.

Mass is the measure of quantity.

1. True
2. False

Q. Dusting a carpet removes dust due to:

1. inertia of motion
2. the force of gravity
3. inertia of rest
4. inertia of direction

Q.

Which of the following has more inertia? A five-rupee coin or a one-rupee coin.

Q.

There are three solids made up of aluminum, steel, and wood, of the same shape and same volume. Which of them would have the highest inertia?

Q.

When a motor car makes a sharp turn at high speed, we tend to get thrown to the one side of the car, why?

Q.

Do all bodies have the same inertia? Explain it with an example. [3 MARKS]

Q. A box is at rest on a smooth surface. Two friends are pushing it in opposite directions as shown. Choose the correct options.

1. The net force is zero.
2. The net force is 3 N in the right direction.
3. The net force is 3 N in the left direction.
4. The net force is 17 N in the left direction.

Q. A cart at rest is acted up on by 80 N force towards left and 60 N force towards right. What is the magnitude of the net force on the cart and in which direction will the cart move?

1. 20 N, left
2. 80 N, right
3. 40 N, left
4. 20 N, right

Q.

What does 3 types of inertia states in a easy language

Q.

How many types of inertia do the material bodies have?