A leaf is at rest until the wind blows. 2
More force is needed to move a bowling ball than a baseball. 5
A professional pitcher throws harder and faster than a middle school student. 8
A rabbit pushes its legs down on the ground causing the rabbit to hop. 60
A firework’s thrust pushes toward the ground but the firework flies towards the sky. 70
The door is at rest until it is opened. 8
A soccer ball rolls until it hits the net or friction slows it down. 4
A middle school student applies more force to a soccer ball than a toddler. 6
The harder a ball is thrown down against the ground, the higher it will bounce. 90