An Object is thrown vertically upward with a speed of 30 m/s . The velocity of the object half -a - second before it reaches the maximum height is

Options

A. 4.9 m/s
B. 9.8 m/s
C. 19.6 m/s
D. 25.1 m/s

Answer

A

Explanation

According to the question
Velocity of an object half a second before maximum height
= velocity of an object half a second after
maximum height ( return journey )
`=0 + g t = 0 + 9.8 xx 1/2 = 49 m //s`