# A Child throws a ball vertically upwards, then catches it

## Homework Statement

Taking the intial velocity to be 10.0 m/s, g to be 9.8m/s2 and ignoring effects of air calculate:
-the total time of flight of the ball
-the maximum height it reaches

variables:
u=10
a=9.8

v=u+at
x=vt-1/2at

## The Attempt at a Solution

I've recently switched to Physics at school and I'm unsure about this question. Why isn't the intial velocity zero if it is being thrown up?

Dick
Homework Helper

## Homework Statement

Taking the intial velocity to be 10.0 m/s, g to be 9.8m/s2 and ignoring effects of air calculate:
-the total time of flight of the ball
-the maximum height it reaches

variables:
u=10
a=9.8

v=u+at
x=vt-1/2at

## The Attempt at a Solution

I've recently switched to Physics at school and I'm unsure about this question. Why isn't the intial velocity zero if it is being thrown up?

Because the problem says the initial velocity upward is 10m/s. Why do you think it should be zero?

SteamKing
Staff Emeritus
Homework Helper
Take your hand and pick up a ball.
Turn your hand over, so that the ball is resting in your palm.
This is a ball with a zero vertical velocity.

haruspex