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The engine of motorcycle can produce a maximum acceleration . Its brakes can produce a maximum retardation . What is the minimum time in which it can over a distance of
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If a body starts from rest with acceleration and then retards with retardation and comes to rest. The total time taken for this journey is and distance covered is
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If the velocity of a particle is , then the average acceleration of the particle between and is
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A body is travelling in a straight line with a uniformly increasing speed. Which one of the plot represents the changes in distance (s) travelled with time ()
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A particle moving in a straight line covers half the distance with speed of . The other half of the distance is covered in two equal time intervals with speed of and respectively. The average speed of the particle during the motion is
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A particle has an initial velocity and an acceleration of Its speed after 10 s is
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In a race for 100m dash, the first and the second runners have a gap of one metre at the mid way stage. Assuming the first runner goes steady, by what percentage should the second runner increases his speed just to win the race.
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A balloon starts rising from the ground with an acceleration of after 8s, a stone is released from the balloon. The stone will
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The given graph shows the variation of velocity with displacement. Which one of the graph given below correctly represents the variation of acceleration with displacement?
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The displacement-time graphs of two moving particles make angles of with the axis. The ratio of their velocities is
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If the velocity of particle is given by , then its acceleration will be
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