# Projectile Motion - PowerPoint PPT Presentation

1 / 9
Title:

## Projectile Motion

Description:

### Projectile Motion By: Mujahed Khan Eman Nader Lorenz Schuerch Terms Projectile- is an object upon which the only force acting is gravity, it is any object which once ... – PowerPoint PPT presentation

Number of Views:161
Avg rating:3.0/5.0
Slides: 10
Provided by: shs79
Category:
Tags:
Transcript and Presenter's Notes

Title: Projectile Motion

1
Projectile Motion
• By
• Mujahed Khan
• Lorenz Schuerch

2
Terms
• Projectile- is an object upon which the only
force acting is gravity, it is any object which
once projected continues in motion by its own
inertia and is influenced only by the downward
force of gravity.
• Parabola-a plane curve formed by the intersection
of a right circular cone and a plane parallel to
an element of the curve

3
Concept
• The concept of a projectile motion is that an
object an that follows moving in constant
horizontal velocity and also drops due to the
force of gravity, just like free fall except it
does not immediately hit the ground when it is
released.

4
(No Transcript)
5
Examples of Projectile
6
The Laws of Projectile Problems
• 1.Draw a picture
• 2. Write givens in terms of x and y
• 3. Decide what to solve for
• 4. In horizontal use Vd/t
• 5. In vertical use dvit1/2atsquared or
• 6. If problem is horizontal viom/s in vertical
• 7. If problem relates to an angle, use SOHCAHTOA
• 8. If problem dt, vf at top of path0m/s
• 9. A-9.8 m/s in vertical

7
Sample Problems
• 2. A potato is shot horizontally out of a cannon
with a speed of 60m/s at a target 70m away. How
long does the potato take to travel the
horizontal distance?
• Equation Velocitydistance/time
• Velocity60m/s
• distance70m/s
• time?
• 6070/t
• time1.16 seconds
• If you drop a water balloon from a 5 meter tall
ledge. How long does the balloon take to reach
the ground?
• Equation dvit½atsquared
• acceleration-9.8
• initial velocity 0m/s
• distance5m
• time?
• 5m(0m/s)½(-9.8)(tsquared)
• ½(-9.8)-4.9
• 5/-4.9-4.9tsquared/-4.9
• Time 1 Second

60m
70m
8
Quiz Questions
1. Lorenz wants to ride his bicycle at 10 m/s at
heading 40 degrees NE. How much of his velocity
is north and how much is east?
2. A bullet is fired horizontally at a target 50
meters away, and it has dropped 0.5 meters by the
time it reaches the target, how long does it take
to drop?
3. Eman decides to jump of a cliff, she jumps
horizontally at 3m/s from a 25 meter tall cliff.
Below her, rocks extend form the base of the
cliff for 5 meters. Will the she clear the rocks?
4. If you drop a ball from rest what information do
you need to predict how time it will take to hit
the floor?

9