1. Projectile motion

2. Projectile Motion
Projectile = an object that moves along a two- dimensional curved trajectory in response to gravity
Projectile Motion = the motion of a projectile under gravity
Time of Flight = the time taken for a projectile to complete its motion
Range = the horizontal distance travelled by a projectile (∆dx)

3. Dropping vs. Throwing

4. Important Properties of Projectile Motion
Objects fall at the same rate, regardless if dropped or thrown
Projectiles have no acceleration horizontally horizontal : a = vertical : a = 9.8 m/s2
Projectiles follow parabolic motion
At the vertex the vertical velocity is 0 m/s

5. Example 1:
A circus clown is shot at 40.0 m/s horizontally out of a canon from the top of a m high cliff.
a) How long is he in the air? (flight time)
b) How far from the base of the cliff will he land?
(range)

6. Try #1 on page 78

7. Example 2:
A circus clown is shot out of a cannon on the ground at an angle of 40˚ above the horizontal and at 9.4 m/s. Determine his
Time of flight
Range
Max. height

8. Example 3:
The same clown is now shot from a cannon at 25 m/s and 50˚ above the horizontal.
This time, the cannon is on top of a 30.0 m high cliff.
What is the clown’s
Time of flight
Range
Final velocity before hitting the ground

9. Try
Page 81: #2,6,7,8