In the figure shown, a balloon is pressed against a wall. It is in equilibrium and maximum compressed state. F → 1 = force of balloon on hand of man; F → 2 = force of balloon on wall; F → 3 = friction; F → 4 = weight of balloon. Choose the correct statement.

F → 4 and gravitational force exerted by balloon on earth are action reaction pairs.

F → 1 and F → 2 are action reaction pairs.

F → 3 and F → 4 are action reaction pairs.

F → 2 and F → 3 are action reaction pairs.

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An object experiences a net force and accelerates from rest to its final velocity in $16 s$ . How long would the object take to reach the same final velocity from rest if the force was four times larger?

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Important Questions on Laws of Motion

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 5 - Laws of Motion>Exercise>Q 18

When an elevator is moving upward, the apparent weight of a body inside elevator

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 5 - Laws of Motion>Exercise>Q 19

A bus moving on a level road with a velocity

v

can be stopped at a distance of

x,

by the application of a retarding force F. The load on the bus is increased by 25% by boarding the passengers. Now, if the bus is moving with the same speed and if the same retarding force is applied, the distance travelled by the bus before it stops is

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 5 - Laws of Motion>Exercise>Q 20

A force of

10 N

acts on a body of mass

0 .5 kg

for

0 .25 s

starting from rest. What is its momentum now?

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 5 - Laws of Motion>Exercise>Q 2

A block of mass $m$ is placed on a smooth inclined plane of inclination

θ

with the horizontal. The force exerted by the plane on the block has a magnitude _____.

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 5 - Laws of Motion>Exercise>Q 3

Assertion: The third law of motion concludes that the forces occur in pairs of action and reaction.

Reason: The action force is more than the reaction force.

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 5 - Laws of Motion>Exercise>Q 5

Assertion: A block is pulled by external force

F

as shown in figure. In equilibrium external force and spring force on block are action and reaction pair.

Question Image

Reason: Action and reaction pair are always equal and opposite.

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 5 - Laws of Motion>Exercise>Q 6

In the figure shown, a balloon is pressed against a wall. It is in equilibrium and maximum compressed state.
Question Image

{\vec{F}}_{1} =

force of balloon on hand of man;

{\vec{F}}_{2} =

force of balloon on wall;

{\vec{F}}_{3} =

friction;

{\vec{F}}_{4} =

weight of balloon. Choose the correct statement.

EASY

Agniveer Vayu

IMPORTANT

Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 5 - Laws of Motion>Exercise>Q 8

When a horse pulls a cart, the force that helps the horse to move forward is the force exerted by

An object experiences a net force and accelerates from rest to its final velocity in 16 s. How long would the object take to reach the same final velocity from rest if the force was four times larger?

Important Questions on Laws of Motion

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An object experiences a net force and accelerates from rest to its final velocity in $16 s$ . How long would the object take to reach the same final velocity from rest if the force was four times larger?