Energy, Forces, & Motion

What is a force?

• energy of movement

• something that pushes or pulls

• increasing speed

• outside

What is NOT a way that an object can accelerate?

• decreasing speed

• change in direction

• friction

• increase in speed

The SECOND part of Newton's 1st law states:

• An object at rest will stay at rest

• An object in motion will stay in motion

• An object at rest will stay in motion

• An object in motion will stay at rest

The FIRST part of Newton's 1st law states:

• An object at rest will stay at rest

• An object in motion will stay in motion

• An object at rest will stay in motion

• An object in motion will stay at rest

What is speed?

• The distance that an object travels in a given unit of time

• the amount of matter in an object

• quickness of motion

• a push or a pull on an object

What is a force that causes an object to start moving, stop moving, or change direction

• Acceleration

• Unbalanced Force

• Balanced Force

• Inertia

What is the tendency of an object to resist changes in motion

• Acceleration

• Unbalanced Force

• Balanced Force

• Inertia

What is weight?

• the force of gravity on a person or object at the surface of a planet

• the amount of matter in an object

• anything that has mass and takes up space

• force that two surfaces exert on each other when they rub against each other

What is the name of force caused when two surfaces rub together?

• Friction

• Gravity

• Magnetic

During a storm, the power goes out at Randall's house. His mother strikes a match to light a candle. As the match burns, it gives off light energy.
What other form of energy does the burning match give off?

• Chemical Energy

• Electrical Energy

• Mechanical Energy

• Thermal Energy