Question: Time rate of change of momentum is equal to____________________?

• 1. force
• 2. impulse
• 3. velocity
• 4. both A and C

Question: Why Ballistic missile fails in some circumstances of precision ?

• 1. due to their shape
• 2. due to air resistance
• 3. due to angle of projection
• 4. all of these

Question: A body is moving with uniform velocity. Its______________________?

• 1. speed changes
• 2. acceleration changes
• 3. direction of motion changes
• 4. displacement from origin changes

Question: When velocity time graph is a straight line parallel to time axis then__________________?

• 1. acceleration is const
• 2. acceleration is variable
• 3. acceleration is zero
• 4. velocity is zero

Question: Slope of velocity time graph is_____________________?

• 1. acceleration
• 2. distance
• 3. force
• 4. momentum

Question: Which law of motion is also called law of inertia ?

• 1. 1st law
• 2. 2nd law
• 3. 3rd law
• 4. all 1st, 2nd and 3rd laws

Question: Newtons laws do not hold good for particles_______________?

• 1. at rest
• 2. moving slowly
• 3. move with high velocity
• 4. move with velocity comparable to velocity of light

Question: 2nd law of motion gives the definition of________________?

• 1. force
• 2. acceleration
• 3. velocity
• 4. both force and acceleration

Question: Momentum depends upon__________________?

• 1. force acts on the body
• 2. mass of the body
• 3. velocity of the body
• 4. both mass and velocity of the body

Question: When a body moves in a straight line then its displacement coincides with__________________?

• 1. distance
• 2. force
• 3. acceleration is zero
• 4. both A and B