Question

A ball is thrown upward from the ground. It is at 80 m in two time

Answer 1

Answer:

4 sec

Explanation:

distance=80 m

a=g= -10 m/s²

but take g=10 m/s² as time cannot be in negative.

u=0

S=ut+1/2at²

80=1/2×10×t²

80=5t²

t²=80/5= 16

t=√16=4

at t=4 sec , the ball will be at height 80 m.

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