Question 1

A push or pull on an object is called&#10;A)Pressure&#10;B)Push-pull&#10;C)Force&#10;D)All of the above

Accepted Answer

Force is defined as a push or pull on an object, which can cause the object to accelerate.

Question 2

If two forces act in the opposite directions on an object, the net force acting on it is the&#10;A)Sum of the two forces&#10;B)difference between the two forces&#10;C)Multiplication of the two forces&#10;D)Division of the two forces

Accepted Answer

The net force acting on an object when two forces act in opposite directions is the difference between the two forces, as they partially cancel each other out.

Question 3

Which of the following is proper example(s) to explain that force on an object may change its shape&#10;A)A ball of dough rolled into chapati&#10;B)Pressing a rubber ball kept on table&#10;C)Making model using clay&#10;D)All of the above

Accepted Answer

All the examples given involve applying force to an object, which results in a change in its shape, illustrating how force can alter the shape of objects.

Question 4

A ball rolling on the ground slows down and finally stops. This is because of&#10;A)Force&#10;B)Less force applied&#10;C)Friction&#10;D)None of the above

Accepted Answer

Friction between the ball and the ground opposes the motion of the ball, causing it to slow down and eventually stop.

Question 5

Force of friction always acts on moving objects and its direction shall be ____&#10;A)On any direction&#10;B)Along the direction of motion&#10;C)Perpendicular to the direction of motion&#10;D)Opposite to the direction of motion

Accepted Answer

The force of friction always acts in the direction opposite to the direction of motion to oppose the motion of the object.

Question 6

If In a tug-o-war, two teams pulling a rope does not move towards any team, it implies that&#10;A)Equal force is being applied in the same direction&#10;B)Equal Force is being applied in opposite direction&#10;C)No force is applied in any direction&#10;D)Cannot be explained

Accepted Answer

When two teams in a tug-of-war are pulling the rope and it does not move towards any team, it implies that equal forces are being applied in opposite directions. This results in a state of equilibrium where the forces cancel each other out, preventing any movement of the rope towards either side.

Question 7

An example of a non- contact force is&#10;A)Force exerted by us to lift a bucket&#10;B)Push a stationary car&#10;C)Force exerted by magnet&#10;D)Hit a cricket ball for a 6 run

Accepted Answer

Non-contact forces are forces that act on an object without any physical contact. The force exerted by a magnet is an example of a non-contact force because it can attract or repel other magnetic materials without touching them.

Question 8

Pressure =&#10;A)Area / force on which it acts&#10;B)force / area on which it acts&#10;C)Volume / force on which it acts&#10;D)Force / volume on which it acts

Accepted Answer

Pressure is defined as the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Hence, pressure is calculated as force divided by the area on which it acts.

Question 9

Gravity is&#10;A)Repulsive&#10;B)Attraction + Repulsive force&#10;C)Attractive force&#10;D)Not a force

Accepted Answer

Gravity is universally recognized as an attractive force that pulls objects towards each other.

Question 10

A batsman hits the ball for a boundary past the bowler i.e. four runs. The batsman thus&#10;A)Changes the direction & speed of the ball&#10;B)Does not change the direction but speed only&#10;C)Does not change the speed but direction only&#10;D)Does not change either direction or speed

Accepted Answer

When a batsman hits the ball for a boundary, they impart force onto the ball, which changes both its speed (increasing it to reach the boundary) and its direction (directing it past the bowler).

Deck 1: Understanding Forces: Exploring the Effects and Characteristics of Pushes, Pulls, and Friction