Force and Motion

The tendency of an object to stay in motion or at rest is called 

• velocity
• acceleration
• speed
• inertia

When two children of equal weight sit at opposite ends of a seesaw, they create

• gravity
• unbalanced forces
• motion
• balanced forces

What is a PUSH or PULL of an object?

• Motion
• Force
• Friction
• Gravity

Why does a rolling ball stop?

• Gravity
• Friction
• Waterfalls
• Sand

Definition of Velocity?

• any change in velocity
• specific speed
• speed in specific direction
• speed in a specific number

definition of motion?

• an object in motion changes position
• affected by the motion of the observer
• It happens instantly
• A change in position over time

Formula of Speed?

• s=d+t
• s=d/t
• s=T/D
• s=t-d

This is a rocket.The rocket pushes the fuel down.What is the other force in this interaction pair?

• The fuel pulls the rocket up.
• The fuel pushes the rocket up.
• The rocket pulls the earth up.
• The earth pulls the rocket down.

On the Picture the balloon pushes the air right. What is the second force in this interaction pair?

• The air pulls the ball left
• Gravity pulls the balloon down
• The air pushes the balloon left.
• The air pulls the balloon right.

What is the net force?

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