Question

(a)
J
A particle of mass m is projected at an angle of 60° with
a velocity of 20 m/s relative to the ground from a plank
of same mass m which is placed on smooth surface.
Initially plank was at rest. The minimum length of the
plank for which the ball will fall on the plank itself is
(g = 10 m/s)
​

Answer 1

Answer:

R = u cos@× T

Explanation:

R= 20 cos60°× 2× 20 sin60/ g. then answer is. 40√3