Forces and Laws of Motion Test

Result

Forces and Laws of Motion Test - 22

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

1 newton is the amount of force that produces an acceleration of 1 $$ms^{-2}$$ in an object of mass:

A
1 g

B
1000 g

C
10 g

D
100 g

Solution

Given: F$$=1N$$, a$$=1 ms^{-2}$$
$$F=ma$$
$$\Rightarrow 1 N = m \times 1 ms^{-2}$$
$$\Rightarrow m=1kg$$
Therefore, $$1\ N$$ of external force is said to be applied when a mass of $$1\ kg = 1000\ g$$ accelerates by $$1\ m/s^2$$.
Question 2
1 / -0

Which of the following has more inertia. A rubber ball or a stone of the same size?

A
rubber ball

B
stone

C
both have same intertia

D
cannot be determined

Solution

A stone.
Inertia is associated with mass. Objects having more mass have more inertia.
Question 3
1 / -0

A car accelerates along a road. Identify the force that moves the car.

A
Friction force between wheel and ground

B
Thrust exerted by the exhaust

C
Rolling force on the ground

D
None of these

Solution

A car accelerates along a road due to the friction force between the wheels and the road.
Question 4
1 / -0

Inertia of a body depends on:

A
Mass of the body

B
Velocity of the body

C
Acceleration of the body

D
Energy of the body

Solution

$$I=mr^2$$ where, r is the distance of CM from axis
Factors on which inertia of a body depend are:
(1) Mass
(2) Axis of rotation
Question 5
1 / -0

The mass of an object is a $$\underline{ }$$ measure of inertia:

A
quantitative

B
qualitative

C
absolute

D
average

Solution

The tendency of an object to resist changes in its state of motion varies with mass. Mass is that quantity that is solely dependent upon the inertia of an object. The more inertia that an object has, the more mass that it has. A more massive object has a greater tendency to resist changes in its state of motion.
Question 6
1 / -0

Consider a ball at rest in the middle of a toy wagon. When the wagon is pulled forward, the ball:

A
Rolls forward

B
Stays stationary

C
Rolls sidewards

D
Rolls backwards

Solution

The relative motion between ball and toy wagon is zero before being pulled. As the wagon is pulled, the inertia of ball causes ball to maintain its state of rest, so the ball rolls backwards when wagon is moved in forward direction.
Question 7
1 / -0

Which of the following action describes pushing by a body?

A
Kicking

B
Lifting

C
Picking

D
Opening

Solution

By kicking a body, we apply a force towards the center of mass of the body, thus kicking is a pushing force whereas lifting, opening, and picking are the pulling forces.
Question 8
1 / -0

The incorrect statement about newton's second law of motion is that:

A
it provides a measure of inertia

B
it provides a measure of force

C
it relates force and acceleration

D
it relates momentum and force

Solution

Newton's second law does not provide a measure of inertia.
Newton's second law states that:
"The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object".
Question 9
1 / -0

Force exerted is :

A
Effort

B
Load

C
Fulcrum

D
None of these

Solution

Effort is defined as a force exerted by a machine or in a process.
Question 10
1 / -0

Which of the following is NOT attributable to application of force?

A
rowing of a boat

B
bursting of a balloon while blowing

C
pedaling a cycle

D
catching a moving cricket ball

Solution

In all other options two objects are in contact with each other so a force is being applied but the balloon bursts because of its excessive expansion beyond its elastic limit, thus bursting a balloon while blowing is not attributable to application of force .

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Forces and Laws of Motion Test - 22

Result

Forces and Laws of Motion Test - 22

Score

-

Rank

-

SHARING IS CARING

Question 1

1 g

1000 g

10 g

100 g

Solution

Question 2

rubber ball

stone

both have same intertia

cannot be determined

Solution

Question 3

Friction force between wheel and ground

Thrust exerted by the exhaust

Rolling force on the ground

None of these

Solution

Question 4

Mass of the body

Velocity of the body

Acceleration of the body

Energy of the body

Solution

Question 5

quantitative

qualitative

absolute

average

Solution

Question 6

Rolls forward

Stays stationary

Rolls sidewards

Rolls backwards

Solution

Question 7

Kicking

Lifting

Picking

Opening

Solution

Question 8

it provides a measure of inertia

it provides a measure of force

it relates force and acceleration

it relates momentum and force

Solution

Question 9

Effort

Load

Fulcrum

None of these

Solution

Question 10

rowing of a boat

bursting of a balloon while blowing

pedaling a cycle

catching a moving cricket ball

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.