In one dimensionsal motion,instantaneous speed v statisfies 0⦤v⦤vₒ
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(a) The displacement x in time T must always take non-negative values (b) The displacement x in time T satisfies -vₒT
A body initially at rest is moving with uniform acceleration a m/s².It’s velocity after n second is v.The displacement of the body in last 2s is
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(a) 2v(n-1)/n (b) v(n-1)/n (c) v(n+1)/n […]
A stone falls freely under gravity.It covers distances h₁,h₂ and h₃ in the first 5 s,the next 5 s, and the next 5 s respectively.The relation between h₁,h₂ and h₃ is
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(a) […]
A juggler maintains four balls in motion,making each of them to rise a height of 20 m from his hand.What time interval should be maintained for the proper distance between them?(take,g=10 ms⁻²)
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At a metro station, a girl walks up a stationary escalator in time t₁.If she remains stationary on the escalator, then the escalator take her up in time t₂.The time taken by her to walk […]
A dust packet is dropped from 5th storey of a multi-storeyed building.In the first second of its free fall another dust packet is dropped from 7th storey 15m below the 9th storey.If both packets reach […]
Water drops fall from a top on the floor 5 m below at regular intervals.If time,the first drop striking the floor when the fifth drop begins to fall.The height at which the third drop will […]
The motion of a particle along a straight line is described by equation : x= 8 + 12t– t³ where x is in metre and t in second. The retardation of the particle when its […]
A ball is dropped from a high rise platform at t = 0 starting from rest. After 6 seconds another ball is thrown downwards from the same platform with a speed v.The two balls meet […]
The position x of a particle with respect to time t along x-axis is given by x = 9t² – t³ where x is in metres and t in second. What will be the position […]
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