FREE FALL

Demonstrating free fall

Demonstrating GALILEO’s experiment on falling bodies

Sample Problem

Sample Problem:1. The time a male bungee

jumper is freely falling is 1.5 seconds.

a)What is the velocity of the jumper at the end of 1.5 seconds?

b)How far does he fall?

2.A juggler tosses three balls alternately vertically upward. Each ball has an initial velocity of 5m/s. How high does each ball rise? How long does each ball remain in the air?

3.A carpenter on the roof accidentally drops a nail that hits the ground after 2.5s.a.How high is the roof?b.What is the velocity of

the nail just before hitting the ground?

A boy tosses a coin upward with a velocity of +14.7 m/s. Finda.the maximum height reached

by the coinb.time of flightc.velocity when the coin returns

to the handd.Suppose the boy failed to catch

the coin and the coin goes to the ground. With what velocity will it strike the ground? The boy’s hand is 0.49 m above the ground.

PROJECTILE MOTION

WhatIsit?

The motion of a body thrown horizontally or at an angle other than 90° with

the horizontal is called PROJECTILE MOTION.

A PROJECTILE is any object projected into the air or through space by

application of force