EASY
9th CBSE
IMPORTANT
Earn 100

State the law of conservation of momentum.

Important Questions on Force and Laws of Motion

EASY
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 1
Give two examples from everyday life where the Newton’s third law of motion comes into play.
 
MEDIUM
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 2
Why does a boatman push the river bank backwards with a long bamboo pole, on launching his boat in the water? Explain.  
MEDIUM
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 3
 Why is it difficult to walk on marshy ground? Explain.
 
MEDIUM
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 4
Why does a boatman push water backward with the oars, while rowing a boat? Explain.
MEDIUM
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 5
Why does a boatman ties his boat to a pillar, before allowing the passengers to step on the river bank? Explain.
EASY
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 6
 Why do the birds flap their wings downward while taking a flight? Explain.
EASY
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 7

Do the action and the reaction act on the same body or different bodies? How are the action and reaction related to each other in magnitude and direction? Do they act simultaneously or not?

MEDIUM
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 8
Why is it difficult to climb up a greased pole?