1. REVISION
PROJECTILE MOTION

2. an object upon which the only force acting is the force of gravity..
PROJECTILE
an object upon which the only force acting is the force of gravity..
EQUATIONS OF MOTION

3. BEFORE WE BEGIN Time symmetry
A projectile takes just as long to get from its starting point to its maximum height as it takes to get from the maximum height back to the starting point

4. BEFORE WE BEGIN
The initial velocity of an object, dropped from a stationary surface, is zero

5. BEFORE WE BEGIN
An object, dropped from a moving surface, has the same speed as that of the surface.

6. At the maximum height reached by the object, the speed is always zero.
BEFORE WE BEGIN
At the maximum height reached by the object, the speed is always zero.

7. Downward gravitational acceleration is always present.
BEFORE WE BEGIN
Downward gravitational acceleration is always present.

8. STEPS Draw a picture if one is not given
Choose a direction and fill in all the information on the sketch
Make an information list and select a formula that has all the values
Solve the sum
Interpret your answer if necessary
Reference point
A point in the reference frame used as the 'zero point' .

9. PROJECTILE MOTION PROBLEMS

10. PROJECTILE MOTION PROBLEMS

11. PROJECTILE MOTION PROBLEMS

12. RELATIONSHIP BETWEEN THE GRAPHS

14. Graph of velocity vs time

15. Graph of velocity vs time