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the velocity of a body moving along a straight line with uniform acceleration a reduces by 3/4 of its initial velocity.the total time of motion is? |
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Answer» Time = (-3/4a) times of Initial Velocity Explanation: the velocity of a body moving along a straight line with uniform acceleration a REDUCES by 3/4 of its initial velocity.the TOTAL time of motion is? Let SAY Initial Velocity = 4V Velcoity Reduces by 3/4 = (3/4)4V = 3V Velocity at That Moment = 4V - 3V = V Using V = U + aT here V = V & U = 4V a = a T = > V = 4V + aT => T = -3V/a = (-3/4)4V/a = (-3/4a)(4V) => Time = (-3/4a) time sof Initial Velocity |
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