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प्रश्न
Which physical quantity corresponds to the rate of change of momentum ?
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उत्तर
Force is the physical quantity which corresponds to the rate of change of momentum.
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संबंधित प्रश्न
Figure shows a man standing stationary with respect to a horizontal conveyor belt that is accelerating with 1 m s–2. What is the net force on the man? If the coefficient of static friction between the man’s shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt? (Mass of the man = 65 kg.)
Name the physical quantity which is considered to be a measure of the quantity of motion of a body.
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Explain the meaning of the following equation : .
p = m x v
where symbols have their usual meanings.
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Fill in the following blanks with suitable words :
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(i) a rocket taking off from ground.
(ii) flying of a jet aeroplane.
The troops (soldiers) equipped to be dropped by parachutes from an aircraft are called paratroopers. Why do paratroopers roll on landing ?
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Two billiard balls A and B, each of mass 50 g and moving in opposite directions with speed of 5 ms–1 each, collide and rebound with the same speed. If the collision lasts for 10–3 s, which of the following statements are true?
- The impulse imparted to each ball is 0.25 kg ms–1 and the force on each ball is 250 N.
- The impulse imparted to each ball is 0.25 kg ms–1 and the force exerted on each ball is 25 × 10–5 N.
- The impulse imparted to each ball is 0.5 Ns.
- The impulse and the force on each ball are equal in magnitude and opposite in direction.
