A particle moving in a straight line covers half the distance with speed of 3 m/s.The other half of the distance is covered in two equal time intervals and with speeds of 4.5 m/s and […]
A body travelling along a straight line traversed one-third of the total distance with a velocity 4ms⁻¹.The remaining part of the distance was covered with a velocity 2 ms⁻¹ for half the time and with […]
A particle moves along with x-axis.The position x of particle with respect to time t from origin is given by x=bₒ+b₁t+b₂t².The acceleration of particle is
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(a) bₒ (b) b₁ (c) b₂ (d) […]
A body is thrown vertically upward in air when air resistance is taken into account,the time of ascent is t₁ and time of descent is t₂, then which of the following is true?
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A ball is dropped into a well in which the water level is at a depth h below the top.If the speed of sound is c,then the time after which the splash is heard will […]
Two bodies A(of mass 1kg) and B(of mass 3 kg) are dropped from heights of 16 m and 25 m,respectively.The ratio of the time taken by them to reach the ground is
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A ball rolls off the top of stair way with a horizontal velocity of magnitude 1.8 m/s.The steps are 0.20 m high and 0.20m wide.Which step will the ball hit first?
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(a) […]
The velocity of a particle at an instant is 10 ms⁻¹.After 3 s its velocity will become 16 ms⁻¹.The velocity at 2 s before the given instant, will be
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(a) 6 ms⁻¹ […]
A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 seconds,the next 5 seconds and the next 5 seconds respectively. The relation between h1, h2 and h3 is […]
A particle covers half of its total distance with speed v1 and the rest half distance with speed v2. Its average speed during the complete journey is
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(a) (v1v2)/(v1+v2) (b) (2v1v2)/(v1+v2) (c) […]
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