MEDIUM
9th CBSE
IMPORTANT
Earn 100

Derive the relationship. F = m (v-u)/t, where each symbol has its usual significance.

Important Questions on Force and Laws of Motion

HARD
9th CBSE
IMPORTANT
Physics>Chapter 2 - Force and Laws of Motion>EXAM PRACTICE QUESTIONS>Q 25
How can you explain flying of an aeroplane in terms of Newton's laws of motion?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 2 - Force and Laws of Motion>EXAM PRACTICE QUESTIONS>Q 26
 Why does a fielder pull his arms back while trying to stop or catch a cricket ball?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 2 - Force and Laws of Motion>EXAM PRACTICE QUESTIONS>Q 27
State the law of conservation of momentum.
EASY
9th CBSE
IMPORTANT
Physics>Chapter 2 - Force and Laws of Motion>EXAM PRACTICE QUESTIONS>Q 28
State Newton's second law of motion.
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 2 - Force and Laws of Motion>EXAM PRACTICE QUESTIONS>Q 28
How does the second law of motion give us a method of measure force?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 2 - Force and Laws of Motion>EXAM PRACTICE QUESTIONS>Q 29
Define the momentum of a body.
HARD
9th CBSE
IMPORTANT
Physics>Chapter 2 - Force and Laws of Motion>EXAM PRACTICE QUESTIONS>Q 29
Prove with the help of the third law of motion that the total momentum of two bodies is conserved during collision provided no external force acts.
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 2 - Force and Laws of Motion>EXAM PRACTICE QUESTIONS>Q 30
What is the law of inertia? Name the scientist who first stated this law. Describe a simple experiment to demonstrate the inertia of rest.