1. According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction. |
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Answer: Option B
2.The
friction experienced by a body, when in motion, is known as
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Answer: Option B
3. Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the ball with velocity v is made to struck the second ball. Both the balls after impact will move with a velocity |
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Answer: Option B
4. The
term 'force' may be defined as an agent which produces or tends to produce,
destroys or tends to destroy motion.
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Answer: Option A
5. The
force required to move the body up the plane will be minimum if it makes an
angle with the inclined plane __________ the angle of friction.
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Answer: Option A
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