Question

Find time of ascent if g= 10m/s²and height is 80 meters

Answer 1

Explanation:

s = 80 m, g = 10m/sec² , t = ? , u = 0

s = ut + 1/2 g t²

=> 80 = 0×t + 1/2 × 10 × t²

=> 80 = 5t²

=> t² = 80/5 = 16

=> t = √16 = 4 secs