_______________ do not change motion. They have a net force of 0.

• Unbalanced forces
• Balanced forces

____________________ is speed in a specific direction.

• Acceleration
• Velocity
• Force
• Motion

______________________ can cause a change in motion. They have a net force greater than 0.

• Unbalanced forced
• Balanced forces

______________ is the change in velocity over time.

• Force
• Motion
• Acceleration
• Velocity

Bobby rode his bike 350 miles in 7 hours. What is his average speed? S=D/T

• 60 mph

• 50 mph

• 5 mph

• 65 mph

Emily traveled 1,695 miles in 3 hours by plane. What was the average speed of the plane?

• 565 mph

• 3,593.75 mph
• 718 mph
• 1,435 mph

______________ is a change in position over time.

• Velocity
• Motion
• Acceleration
• Force

Check all that apply. In order to describe an object’s motion, you need to know these three things:

• Time
• Direction
• Distance
• Reference Point

Compare balanced and unbalanced forces.

• Balanced forces cannot change the motion of object. Unbalanced forces can change the motion of objects.
• Unbalanced forces cannot change the motion of object. Balanced forces can change the motion of objects.
• They both change the motion of objects.
• Neither of these forces can change the motion of the objects.

What are some examples of forces that act at a distance?

• Touching
• Magnetism
• Gravity
• Friction