Third Law of Motion

Q.

When you kick a stone you get hurt due to which property this happens?

1. inertia of stone

2. velocity of kick

3. mmentum of kick

4. reaction of stone

Q.

What is force? How do two bodies exert force on each other?

Q.

Two blocks of unequal masses are tied by a spring. The blocks are pulled stretching the spring slightly and the system is released on a frictionless horizontal platform. Are the forces due to the spring on the two blocks equal and opposite? Is it an example of Newton's third law?

1. Yes, No

2. Yes, Yes,

3. No, Yes

4. No, No

Q. Why it is difficult to balance our body when we accidentally step on a peel of banana?

Q. The force exerted by the ground on a person standing on earth is roughly the force exerted by the ground on a person standing on the moon.

1. equal to
2. twice
3. three times
4. six times

Q. A ball of dough Is rolled into a flat chapatti. Name the force exerted to change the shape of the dough.

1. Frictional force
2. Muscular force
3. Gravitational force
4. Magnetic force

Q.

What is free body diagram ?

How many force can be in free body diagram?

Q.

when is pressure exerted more while walking or standing

Q. Is there anything different about thrust and force?

Q.

DIRECTIONS : Read the following statements and write your answer as true or false.

Action and reaction act on the same body.

1. True
2. False

Q. When a person jumps off a boat, there is no force acting on the boat and thus it will stay still.

1. True
2. False

Q.

Which of the following forces helps us walk on ground?

1. Buoyant force

2. Weight

3. Frictional force

4. Drag

Q.

Since action and reaction forces are always equal and opposite, how can motion then take place ? [3 MARKS]

Q. A boy hits a football with some amount of action force. What can be inferred from this scenario?

1. The action and reaction forces differ in magnitude.
2. The action and reaction forces act only on the boy's foot.
3. There won't be any reaction force.
4. The reaction force acts on the boy's foot.

Q. An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target.


Based on the following information, fill in the blanks using the given terms.
(muscular, contact, non-contact, gravity, friction, shape, attraction)

A. To stretch the bow, the archer applies a force that causes a change in its __________.

B. The force applied by the archer to stretch the bow is an example of __________ force.​

C. The type of force responsible for a change in the state of motion of the arrow is an example of a __________ force.

D. While the arrow moves towards its target, the forces acting on it are due to _____ and that due to ______ of air.

Q. What is the sign of INERTIA?

Q.

Body A collides with body B. A exerts a force of 10N on B. The force that B exerts on A is _______ .

Q. State newton`s second law of motion and give related expression why does a cricket player lower his hands while catching the ball ?

Q. A book of mass 5 kg is placed on a table and it is pressed by 10 N force then normal force exerted by the table on the book is

1. 10 N
2. 70 N
3. 59 N
4. 50 N

Q.

Do nonliving objects exert force? Explain with an example.

Q. According to Newton’s 3rd law, action and reaction:

1. are equal in magnitude
2. are oppsite in direction
3. act on the same bodies
4. act on different bodies

Q. Newton's third law of motion tells us that an applied force has an equal and opposite reaction force

1. conserves momentum
2. False

Q. An archer shoots an arrow in the air horizontally. However, after moving some distance, the arrow falls to the ground.
The force which sets the arrow in motion initially is ______, whereas, ________ is the one responsible for the falling down of the arrow ultimately.

1. gravitational force, muscular force
2. magnetic force, gravitational force
3. muscular force, gravitational force,
4. muscular force, magnetic force

Q. Why the every action has same and equal reaction on act of two different body. It can be 4 to 5 different body know what the reason????

Q. Newton's law states that every action has an equal and reaction and these act on bodies.

1. opposite
2. different
3. same
4. equal

Q.

A boy hits the football with a large force, the action force acts on the football and the reaction force of the same magnitude acts on the boy. What can be inferred from the given statement?

1. Action and reaction force does not cancel each other

2. Action and reaction forces acts on two different bodies

3. All of the above

4. Action force and reaction force are equal to each other

Q. A boy throws a spherical ball of clay towards a wall as shown below. ​​

Discuss the type of force responsible for throwing of the clay and the various effects of forces experienced by the clay during this scenario.

Q. The action and the reaction forces act on two different bodies.

1. True
2. False

Q. While opening a tap with two fingers, the forces applied are :

1. Equal in magnitude
2. Parallel to each other
3. Opposite in direction
4. All the above

Q.

State Newtons third law of motion and illustrate it with three examples.