1. Physics Photo Project

2. Newton’s 1 st Law The seatbelts in this rollercoaster keep Jack and Reed inside the car as it speeds down the track and comes to a stop. A body in motion tends to stay in motion and will continue moving forward if the seat belt is not there to apply a force to stop them.

3. Friction The force of friction is much lower on ice allowing the metal blade of the ice skate to glide easily. There is still friction – if there was not we would not be able to move forward.

4. MASS On top of the Great Wall of China my weight is a bit lower. Weight is a measurement of the Earth’s gravitational pull and as you move further from the center of the Earth your weight decreases.

5. MOMENTUM The train has a rather large momentum due to it’s mass. However as it is stopped it does not have momentum because it does not have velocity. I have more momentum walking than the train does sitting on the track.

6. Acceleration of gravity The acceleration of gravity “g” pulls me back down to Earth at a constant rate when I jump up.

7. Balanced Forces The forces on the porcupine are balanced because he is not moving. The applied force of my hand is equal to the his normal force making the forces balanced.

8. PROJECTILE When the bullet leaves my gun it is a projectile. The only force acting on a projectile is gravity and the bullet will drop in height at a constant rate before hitting the ground.