the motion of a particle is described by u=at . the distancce travelled by the particle in first 4 secc?
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u = a t = instantaneous speed
a = acceleration.
This means that initial speed at t = 0 is 0.
speed is proportional to time.
so s = 0 * t + 1/2 a t² = 1/2 * a * 4²
= 8 a units
a = acceleration.
This means that initial speed at t = 0 is 0.
speed is proportional to time.
so s = 0 * t + 1/2 a t² = 1/2 * a * 4²
= 8 a units
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