Glen and his friend London are going sledding at a local park. There are two hills to choose from, "The Bunny Slopes," which are small hills and lots of flat surfaces, and "The Dragon," which is a steep hill and not for beginners. If London goes first and reaches the bottom and Glen crashes into him from behind on "The Dragon," what would happen to the motion of their sleds?

The diagrams below show a force on an object and its motion.

Which diagram correctly shows the relationship between the force and the motion?

Karyssa is bowling with her friends, and she is looking at the pins when they each throw the ball. Looking at the pictures of the pins, Karyssa has to make a prediction of which ball she thinks had a greater speed upon collision and why?

In the image below, the arrows depict energy being applied to a triangle. This energy would cause the triangle to change positions. What is another name for a change in position?

When objects collide, the contact forces transfer energy so as to change the object's motions.

Two students are rolling a ball back and forth across the playground grass. Suddenly, the ball changes direction. When the students explore why this happened, they see that the ball hit a rock.

Which of these caused the ball to change direction?

Marquise is at baseball practice. What force will most likely cause the baseball to change direction?

Robert is trying to replicate the collision shown in the photograph below. Which ball would create the same change in energy?

True or False: The bowling ball in the picture will change directions because of the force applied by the pins.

What does the term "collide" mean? Example: Jackson and Robbie were afraid to collide when their sleds crossed paths.