forces

What does the strength of gravity between two objects depend upon?

• Mass & distance
• Mass & weight
• Gravity & inertia
• Inertia & mass

What force ultimately slows the roller coaster to a stop?

• Applied
• Normal
• Friction
• Magnetic

An _______ force must act on an object for it to CHANGE it's motion

• balanced
• unbalanced
• gravitational
• electrical

Jupiter has about 317 times more mass than Earth. What can you infer from this fact? 

• That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
• That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
• That Jupiter’s and Earth’s gravitational forces are equal.
• Mass has no effect on the gravitational force between two objects

What is defined as a push or pull?

• force

• motion

• vector

• speed

If the net force is equal to zero, the forces acting on the object are

• balanced

• unbalanced

The unit of force is

• m/s
• m/s^2
• newton
• kg

What is the net force?

• 5000 N right
• 4000 N right
• 40 N left
• 4000 N left

What is the net force in this picture?

• 50 Newtons to the right
• 950 Newtons to the right
• 950 Newtons to the left
• 50 Newtons to the left

Jonny and Patty are pushing against a basketball. Both of them push against theball on opposite sides with a force of 20 N to keep the ball still. What is the net force?

• 400 N
• 24 N
• 0 N
• 40 N