Sawaal
1
Q:

Rocket works on the principle of conservation of

 

A) Momentum B) Mass
C) Velocity D) Energy

Answer:   A) Momentum



Explanation:

Rocket works on the principle of conservation of momentum. The rockets gain momentum equal to the momentum of the gas expelled from the engine, but in the opposite direction.

 

Subject: Physics
Exam Prep: Bank Exams
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What is the standard room temperature in Kelvin?

 

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An object, starting from rest, moves with constant acceleration of 4 m/s2. After 8 s, its speed is

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1 watt is equal to 1 ____________

 

A) J s-1   B) J s
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A body is initially moving with a velocity of 10 m/s. It undergoes an acceleration of 2 m/s2 for 5 seconds. Find the displacement (in m) of this body in these 5 seconds.

 

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Answer & Explanation Answer: D)  75

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