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9th CBSE
IMPORTANT
Earn 100

What do you understand by the term impulse of force?

Important Questions on Force and Laws of Motion

MEDIUM
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 9

When a hockey ball is hit with a hockey stick, in which of the following cases will the impulsive force be the largest when time interval is

(a) 0.1 s,

(b) 1 s,

(c) 0.01 s?

EASY
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 10
State the units of impulse of force in SI system ?
 
MEDIUM
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 1
 Write an expression for impulse of force in terms of (i) force and time, (ii) change in momentum.
MEDIUM
9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 2
Why is the term impulse of force coined?
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 3
Why are we not hurt at all, while diving in a deep water tank from a height of 10 m? Explain.
 
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 4
Why are the long jump athletes made to jump in sand pits? Explain.
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 5
Why are the glass and porcelain articles packed in straw, foam or cardboard? 
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 2 - Force and Laws of Motion>EXERCISE>Q 6

Why is the body of cars, scooters, etc, is mounted on flat springs? Explain.