Question

A ball is thrown vertically upwards. It returns 10 seconds later.. Calculate: (i) the greatest height reached by the ball and (ii) the initial velocity of the ball

Answer 1

Answer:

h=480.2m

Vi=98m/s

Explanation:

t=10s

Vf=0m/s

Vi=?

h=?

g=-10m/s

Vf=Vi+gt

0=Vi+(-9.8)10

0=Vi-98

Vi=98m/s

h=Vf^2-Vi^2/2g

=0-98^2/2(-10)

=-9604/-20

minus sign cancel each other

h=9604/20

h=480.3m