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If magnitude of average speed and average velocity over a time interval are same, then

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Important Questions on Motion in a Straight Line

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When the velocity of body is variable, then
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The position of a particle moving along x-axis is given by x=10t-2t2. Then the time(t) at which it will momently come to rest is
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If the displacement of a particle varies with time as x=t+7, the
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A particle starts moving with acceleration 2 m s-2. Distance travelled by it in 5th  half second is
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The two ends of a train moving with constant acceleration pass a certain point with velocities u and 3u. The velocity with which the middle point of the train passes the same point is
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A train starts from rest from a station with acceleration 0.2 m s-2 on a straight track and then comes to rest after attaining maximum speed on another station due to retardation 0.4 m s-2. If total time spent is half an hour, then distance between two stations is [Neglect length of train]
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A body is projected vertically upward direction from the surface of earth. If upward direction is taken as positive, then acceleration of body during its upward and downward journey are respectively.
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A particle start moving from rest state along a straight line under the action of a constant force and travel distance x in first 5 seconds. The distance travelled by it in next five seconds will be