Question

A ball is thrown vertically upward with an initial velocity of 19.6 ms" neglecting air resistance.
Find a) The maximum height reached
b) The time of aceond
c)the time of deceand before it reach the ground (g = 9.8 m/s)​

Answer 1

Answer:

a) 19.6m

b) 2s

c) 2s

Explanation:

Initial velocity= 19.6 m/s

Final velocity=0 m/s

v^2=u^2+2as

or, 0=384.16+2(-9.8)s

or, 19.6s= 384.16

or, s= 19.6 m

Maximum height reached=19.6 m

v=u+at

or, 0= 19.6+9.8t

t= 2 s

Time taken of aceond = Time taken of deceand=2 s

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