Newton's Laws

When the air is released from a balloon, the air moves in one direction, and the balloon moves in the opposite direction. Which law best explains the motion of the balloon?

• Newton's Law of Inertia
• Newton's Law of F=ma
• Newton's Law of Force Pairs
• Newton's Law of Biology

What is Newton's First Law known as? The Law of

• Friction
• Mass
• Inertia
• Gravity

An object at rest will _______ if no outside forces are applied.

• Stay at rest
• Increase Velocity
• Decrease Mass

If lil Houdeshell weighs 378 Newtons on Earth and 63 Newtons on the moon, this means that her...

• mass is greater on earth.
• mass is greater on the moon.
• inertia is greater on earth and less on the moon.
• mass is the same on the moon and the earth.

Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 

• feathers 
• iron
• same
• depends on their friction

A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

• For every action there is an equal and opposite reaction.
• Every mass exerts a force on every other mass.
• An object at rest tends to stay at rest.
• Friction opposes the motion of an object.

If lil Houdeshell weighs 378 Newtons on Earth and 63 Newtons on the moon, this means that her...

• mass is greater on earth.
• mass is greater on the moon.
• inertia is greater on earth and less on the moon.
• mass is the same on the moon and the earth.

What is the definition of "weight"?

• the force in which gravity pulls on an object
• the time it takes to get on a ride 
• the amount of matter in an object
• the size of an object

The net force acting on an accelerating object is suddenly halved. This will cause the acceleration of the object to 

• double
• be halved
• remain unchanged

Both the mass and the net force of an accelerating object are suddenly halved. This will cause the acceleration of the object to 

• double
• be halved
• remain unchanged