A block is projected up along a rough incline with a velocity of u = 10 m/s. After 4 s the block was at point B at a distance of 5 m from the startingpoint A and was travelling down at a velocity ofv = 4 m/s. (a) Find time after projection at which the block came to rest. (b) Find the coefficient of friction between the block and the incline. Take g = 10 m//s^(2)

A block is projected up along a rough incline with a velocity of u = 1

1.	A block is projected up along a rough incline with a velocity of u = 10 m/s. After 4 s the block was at point B at a distance of 5 m from the startingpoint A and was travelling down at a velocity ofv = 4 m/s. (a) Find time after projection at which the block came to rest. (b) Find the coefficient of friction between the block and the incline. Take g = 10 m//s^(2)
Answer» ANSWER :`(13)/(7)` s (B) 0.18