question_answer2) Can a body in linear motion be in equilibrium?
question_answer3) A body is acted upon by a number of external forces. Can it remain at rest?
question_answer8) A man jumping out of a moving train falls with his head forward. Why?
question_answer11) We beat a blanket with stick to remove dust particles. Why?
question_answer13) Why fruits fall down from a tree, when its branches are shaken?
question_answer14) Why an athlete runs some steps before taking a jump?
question_answer18) Why are the wheels of vehicles are provided with mudguards?
question_answer20) Why is Newton's first law of motion also called law of inertia?
question_answer25) Chinawares are wrapped in straw paper before packing. Why?
question_answer26) Why we are hurt less when we jump on a muddy floor in comparison to a hard floor?
question_answer27) Why are shockers used in cars, scooters and motorcycles?
question_answer28) Why buffers are provided between the bogies of a railway train?
question_answer29) Why is it necessary to bend knees while jumping from greater height?
question_answer33) Why is it difficult to drive a nail into a wooden block without supporting it?
question_answer34) Why it is difficult to climb up a greesy pole?
question_answer35) In a tug of war, the team that pushes harder against the ground wins. Why?
question_answer42) Why does a rifle give a backward kick on firing a bullet?
question_answer43) Why is it advisable to hold a gun tight to one's shoulder when it is being fired?
question_answer47) Why is static friction called a self adjusting force?
question_answer48) Can we get off a frictionless horizontal surface by jumping?
question_answer50) Carts with rubber tyres are easier to fly than those with iron wheels. Why?
question_answer51) Sand is thrown on tracks covered with snow. Why?
question_answer52) Why are wheels of automobiles made circular?
question_answer53) Proper inflation of tyres of vehicles saves fuel. Why?
question_answer54) It is difficult to move a cycle along a road with its brakes on. Explain?
question_answer55) A large size brake on bicycle is as effective as small one. Comment.
question_answer56) Why is it difficult to put a cycle into motion than to maintain its motion?
question_answer57) How does friction help us in walking?
question_answer58) Why do we slip on a rainy day?
question_answer59) Why is it difficult to walk on sand?
question_answer63) Is it unreasonable to expect the coefficient of friction to exceed unity?
question_answer64) Is friction a non-conservative force?
question_answer67) Why does a child in a merry-go-round press the side of his seat radially outward?
question_answer68) Why does skidding takes place generally on a rainy day along a curved path?
question_answer70) The outer rail of a curved railway track is generally raised over the inner. Why?
question_answer73) Why does a pilot looping a vertical loop lot fall down even at the highest point?
question_answer75) A cricket player lowers his hands to catch the ball safely. Explain, why?
question_answer77) Why does a cyclist bend inwards while riding along a curved road?
question_answer86) The speed of driving a car safely depends upon the range of headlight. Explain.
question_answer95) Can a single isolated force exist in nature? Give reason.
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