MEDIUM
9th CBSE
IMPORTANT
Earn 100

Distinguish between balanced and unbalanced force. Give one example of each.

Important Questions on Force and Laws of Motion

EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 36
Identify the S.I. unit of momentum in the following:
kg m s-1, m s-1, kg m s-2, m s-2.
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 36
Which quantity should be varied if momentum of a body of given mass needs to be changed?
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 36
A constant force applied on an object of mass 2 kg for 10 s, increases its velocity from 5 ms-1 to 10 ms-1. Find the magnitude of applied force. If the same force is applied for 15 s, what will be the final velocity of the object?
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 37
The time taken to stop a ball rolling with velocity u is reduced to half, find the change in values of initial and final momenta.
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 37
The time taken to stop a ball rolling with velocity u is reduced to half, find the change in values of momentum change.
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 37
The time taken to stop a ball rolling with velocity u is reduced to half, find the change in values of rate of momentum change.
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 38

Observe the following v-t graph and explain the type of force acting in the case given:

Question Image

MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 38

Observe the following v-t graph and explain the type of force acting in the case given:

Question Image