a bullet is fired vertically upward from a gun at a velocity of 150m/s.taking g to be 10m/s calculate the gretest heigt reached and at what time and the time the bullet will enter the gun and at what velocity

Answer 1

V = Vo + g*Tr = 0.
Tr = -Vo/g = -150/-10 = 15 s. = Rise time.

Tf = Tr = 15 s.
Tr+Tf = 15 + 15 = 30s. = Time in flight.

V = Vo + g*Tf = 0 + 10*15 = 150 m/s. = Final velocity.

h = Vo*Tr + 0.5g*Tr^2.
Vo = 150 m/s.
Tr = 15 s.
g = -10 m/s^2.
h = ?.