Gravity and Forces

Since we have been studying force and motion, can you pick the right choice for what a force is?

• thrust and drag on an object
• the push and pull of gravity
• the push or pull on an object
• Yoda fighting Darth Vader throwing things at each other

When forces on an object become unbalanced, which of the following happens?

• speed or direction can change
• mass changes
• speed and gravity changes
• Anakin falls to the Dark Side of the Force

All the forces acting on an object is known as which of the following?

• net force
• balanced force
• living force
• objective force

Which of the following is the force that tries to slow objects down or hold them in place?

• inertia
• momentum
• balanced force
• friction

This force pulls objects at 9.8 m/s² provided you are on the planet Earth.

• friction
• kinetic energy
• gravity
• air resistance

What two things does gravity depend on?

• mass and speed
• mass and distance
• distance and temperature
• temperature and speed

Comparing the gravity of Earth and Jupiter, Jupiter has more gravity than Earth. Why?

• Earth is closer to the sun
• Jupiter is farther from the sun
• Jupiter has more mass
• They have the same amount of gravity

Luke Skywalker pushes to the right on an X-wing with 500 Newtons  (a measurement of force). Yoda pushes to the left with 600 Newtons of force. Which way will the X-wing move?

• right
• left
• down
• up

How does gravity affect mass?

• It's what gives mass weight
• it speeds mass away from the Earth
• it increases GPE closer to the ground
• gravity has no affect on mass

Why is the largest hill of a roller coaster at the beginning?

• the height gives it potential energy
• the height gives it kinetic energy and gravity will pull it down fast
• gravity will slow it down at the bottom
• because the big hill at the end would make the ride boring