Question: Which of the following pair has same direction always ?

• 1. force, displacement
• 2. force, velocity
• 3. force, acceleration
• 4. force, momentum

Question: The collision between two bodies be elastic if bodies are_________________?

• 1. solid and soft
• 2. soft and elastic
• 3. solid and hard
• 4. hard and elastic

Question: When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to__________________?

• 1. Centripetal force
• 2. Gravitational force
• 3. Their inertia
• 4. Centrifugal force

Question: What is the shape of velocity, time graph for constant acceleration ?

• 1. straight inclined line.
• 2. parabola
• 3. inclined curve
• 4. declined curve

Question: Which shows the correct relation between time of flight T and maximum height H ?

• 1. H=gT2/8
• 2. H=8T2/g
• 3. H=8g/T2
• 4. H=gT2

Question: Taking off rocket can be explained by __________________?

• 1. 1st law of motion
• 2. 2nd law of motion
• 3. Law of conservation of momentum
• 4. law of conservation of energy

Question: What is the angle of projection for which the range and maximum height become equal ?

• 1. tan-1 ¼
• 2. tan-1 4
• 3. tan-1 ½
• 4. tan-1 2

Question: Distance covered by a freely falling body in 2 seconds will be__________________?

• 1. 4.9 m
• 2. 19.6 m
• 3. 39.2 m
• 4. 44.1 m

Question: Flight of a rocket in the space is an example of______________________?

• 1. second law of motion
• 2. third law of motion
• 3. first law of motion
• 4. law of gravitation

Question: At which angle the range of the projectile is maximum____________________?

• 1. 45
• 2. 60
• 3. 30
• 4. none