Question

a body is projected vertically upwards with a velocity of 98m/s. what is the time for which body will remain in air. (g=9.8m/s2)

Answer 1

10sec

Explanation:

a=gt

98m/s=9.8t

t=10se

Answer 2

Answer:10s

Explanation:u=98m/s

v=o ,

g= -9.8m/s

v=u+at

0=98+(-9.8t)

-98=-9.8t

t=-98/-9.8

t=10s

Hope u understood