A particle is projected vertically upwards with a speed of 16 m s - 1 , after some time, when it again passes through the point of projection, its speed is found to be 8 m s - 1 . It is found that the work done by air resistance is the same during upward and downward motion. Then the maximum height attained by the particle is –

Question

A particle is projected vertically upwards with a speed of 16 m s - 1 , after some time, when it again passes through the point of projection, its speed is found to be 8 m s - 1 . It is found that the work done by air resistance is the same during upward and downward motion. Then the maximum height attained by the particle is –, 8 m, 4.8 m, 17.6 m, 12.8 m

MARKS App · Accepted Answer

From work energy theorem for upward motion, 1 2 m 16 2 = m g h + W for downward motion 1 2 m 8 2 = m g h – W h = 8 m

Search any question & find its solution

Looking for more such questions to practice?