question_answer1) Why do we tend to fall outwards when a car takes a steep turn?
View Solution play_arrowquestion_answer2) An athlete always runs some distance before taking a jump. Why?
View Solution play_arrowquestion_answer5) Which has more inertia, a table tennis ball or a rubber ball of the same size?
View Solution play_arrowquestion_answer10) How is force related to acceleration produced in a body by its application?
View Solution play_arrowquestion_answer11) Athletes in pole jump events fall on cushioned surface and not on floor. Why?
View Solution play_arrowquestion_answer16) If action is always equal to the reaction, explain how a horse can pull a cart?
View Solution play_arrowquestion_answer18) Why does water not pull?
View Solution play_arrowquestion_answer21) Why mass is sometimes called coefficient of linear inertia?
View Solution play_arrowquestion_answer22) What is the net momentum of gun and bullet system before firing?
View Solution play_arrowquestion_answer23) What is the net momentum of gun and bullet system after firing?
View Solution play_arrowquestion_answer24) Why should we wear safety seat belts in a car?
View Solution play_arrowquestion_answer26) If F and F' are balanced forces, what will be the magnitude of ?
View Solution play_arrowquestion_answer27) A body accelerates when balanced force acts on it. Is it true or false? Why?
View Solution play_arrowquestion_answer28) How is force related to momentum of a body?
View Solution play_arrowquestion_answer30) Relate SI unit of momentum with its CGS unit.
View Solution play_arrowquestion_answer31) Why is a person hurt less when he falls on a spongy surface?
View Solution play_arrowquestion_answer32) State a relation for velocity of rocket at any instant of time.
View Solution play_arrowquestion_answer33) Which law can explain the process of recoil of gun?
View Solution play_arrowquestion_answer38) What do you mean by a resultant force?
View Solution play_arrowquestion_answer39) Give two examples of effects of force.
View Solution play_arrowquestion_answer41) Define inertia and list its types. Give two examples to discribe each type.
View Solution play_arrowquestion_answer42) Derive the mathematical relation of Newton's second law of motion.
View Solution play_arrowquestion_answer53) Why do bicycles begin to slow down when we stop pedalling?
View Solution play_arrowquestion_answer54) Which law of motion gives the measure of force?
View Solution play_arrowquestion_answer55) Write the C.G.S unit of force.
View Solution play_arrowquestion_answer56) Can every force produce motion in every object?
View Solution play_arrowquestion_answer58) Define 1 newton force.
View Solution play_arrowquestion_answer59) What do you mean by an impact force?
View Solution play_arrowquestion_answer60) Define force of friction.
View Solution play_arrowquestion_answer61) Define electrostatic force.
View Solution play_arrowquestion_answer63) What do balanced forces usually do to a body?
View Solution play_arrowquestion_answer64) When a body moves on flat surface, will its speed change?
View Solution play_arrowquestion_answer66) What do you mean by a resultant force?
View Solution play_arrowquestion_answer67) Do action and reaction act on the same body?
View Solution play_arrowquestion_answer69) Write the SI unit of impulse.
View Solution play_arrowquestion_answer70) What is the total momentum of a bullet and a gun before firing?
View Solution play_arrowquestion_answer71) Name the principle on which a rocket works.
View Solution play_arrowquestion_answer72) Body A is heavier than body Q. Which has more inertia?
View Solution play_arrowquestion_answer73) A body is moving with uniform acceleration. Is its momentum constant?
View Solution play_arrowquestion_answer74) Name the physical quantity that corresponds to the rate of change of momentum.
View Solution play_arrowquestion_answer75) Which principle is involved in the working of a jet plane?
View Solution play_arrowquestion_answer76) Why mass is sometimes called coefficient of linear inertia?
View Solution play_arrowquestion_answer81) Deduce Newton's first law from the second law.
View Solution play_arrowquestion_answer87) On which factors does friction depend?
View Solution play_arrowquestion_answer89) Describe in brief an activity to illustrate the property of inertia of rest.
View Solution play_arrowquestion_answer90) Why can a small mass such as a bullet kill a person when fired from a gun?
View Solution play_arrowquestion_answer91) Why does a boat tend to leave the shore, when passengers are alighting from it?
View Solution play_arrowquestion_answer92) Give few examples of Newton's third law of motion.
View Solution play_arrowquestion_answer93) Describe our walking in terms of Newton's third law of motion.
View Solution play_arrowquestion_answer97) Why does a cricket player moves his hand backward while catching the ball?
View Solution play_arrowquestion_answer98) Why does an athlete puts some sands or cushion on the ground while high jumping?
View Solution play_arrowquestion_answer99) Describe balanced forces with the help of two examples.
View Solution play_arrowquestion_answer100) When a carpet is beaten with a stick, dust comes out of it. Explain. [NCERT]
View Solution play_arrowquestion_answer102) Why do the driver and the person seated in front seat need a seat belt?
View Solution play_arrowquestion_answer106) Describe Newton's first law of motion in detail, giving examples.
View Solution play_arrowquestion_answer107) Derive the mathematical relation of Newton's second law of motion.
View Solution play_arrowquestion_answer108) Derive the mathematical formula of conservation of momentum.
View Solution play_arrowquestion_answer112) Describe Newton's third law of motion.
View Solution play_arrowquestion_answer113) Why does an athlete run a certain distance before taking a leap?
View Solution play_arrowquestion_answer116) If an object is not moving, does it mean that no force is acting on it?
View Solution play_arrowquestion_answer119) Describe an activity to demonstrate Newton's third law of motion.
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