Forces and Motion

What is a force in the context of physics?

• A type of motion

• A measurement of speed

• A type of energy

• A push or pull on an object

Why doesn't a dodgeball fall through a table due to gravity?

• Because it's not heavy enough

• Gravity doesn't work on dodgeballs

• The table exerts an equal force upwards

• Because of the table's color

What causes an object to start moving?

• Balanced forces

• Unbalanced forces

• Lack of gravity

• Smooth surfaces

What does velocity describe?

• The color of an object

• The shape of an object

• The weight of an object

• An object's speed and direction

What is needed to change the velocity of an object?

• A balanced force

• A smooth surface

• Acceleration

• A lighter object

According to Newton's first law, what will an object at rest do?

• Accelerate on its own

• Stay at rest unless acted upon by an outside force

• Move randomly

• Fall downwards

How does Newton's second law relate force, mass, and acceleration?

• Force equals mass divided by acceleration

• Force equals mass plus acceleration

• Force equals mass times acceleration

• Force equals acceleration minus mass

Why did the giant dodgeball not work well for the game?

• It was too colorful

• It required too much force to move at a reasonable speed

• It was not affected by gravity

• It was too fast

What does Newton's third law state?

• For every action, there's an equal and opposite reaction

• Objects in motion stay in motion

• Velocity determines force

• Force equals mass times acceleration

What happens when a dodgeball hits a player according to Newton's third law?

• It vanishes

• It accelerates

• It exerts a force and receives an equal force back

• It stops immediately