Motion and Forces

What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down

What is the net force

• 10 N
• 0 N
• 25 N
• 1 N

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

When astronauts walked on the Moon, they used weighted boots to help them walk due to the lower gravitational pull. What difference between Earth and the Moon accounts for the difference in gravity?

• density

• diameter

• mass

• volume

What two things does gravity depend on?

• Mass and weight

• Weight and distance

• Mass and force

• Mass and distance

Something that is not moving stays still, and something moving continues going until another force affects it.

• Inertia
• Velocity
• Acceleration
• Motion

When two forces acting on an object are not equal in size.

• Balanced Force
• Friction
• Velocity
• Unbalanced Force

When the net force of opposite forces is zero, the forces are

• unbalanced

• not equal

• balanced

• not even

Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?

• The ribbon will move to the left and group A will win the tug-of-war.
• The ribbon will move to the left and group B will win the tug-of-war.
• The ribbon will move to the right and group B will win the tug-of-war.
• The ribbon will move to the right and group A will win the tug-of-war.

What will happen if you were to drop a 16mm steel marble and a 16mm cork marble onto the floor from the same height and at the same time?

• The steel marble will land first.

• The cork marble will land first.

• Both the steel marble and the cork marble will land at the same time.