Question

EXAMP
1. A ball of mass 50 g is thrown vertically upwards
with an initial velocity of 20 m s-1. Calculate :
(i) the initial kinetic energy imparted to the ball,
(ii) the maximum height reached if air friction is
neglected, and
(iii) the maximum height reached if 40% of the
initial energy is lost against the air friction.​

Answer 1

Answer:

see in the photo

Explanation:

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