Force & Acceleration Terms

What is acceleration?

• When an object changes speed

• When an object moves slow

• When an object moves fast

• When an object moves a steady speed

What is true about free fall?

• Gravity causes objects to do this.

• The acceleration changes

• It can be in any direction

• Some objects are not affected

What is constant acceleration?

• A steady change in speed

• A steady change in acceleration

• A car when it it’s going 55 mph

• A cheetah when it’s walking 2 m/s

What is force?

• A push or pull on an object

• Changing of speed

• How much matter is in an object

• How fast an object moves

What does a Newton measure?

• Force

• acceleration

• Mass

• Velocity

What is net force?

• The average of all forces on an object shown in one direction

• All the forces on an object added up

• All the forces on an object

• Arrows and numbers

What is friction?

• A force that opposes motion

• An acceleration from gravity

• A force that never changes

• A force that makes something faster

What is air resistance?

• A type of friction from air

• The force of air pressure on an object

• When wind blows against something

• When air starts a rally against the ground

What is gravity?

• The force exerted by a mass

• A magnetic force

• The force created from the earth spinning

• The force of the sun grounding us against the earth

What is terminal velocity?

• When air resistance equals the force from gravity.

• When air resistance exceeds the force from gravity.

• When the force of gravity exceeds the force of air resistance.

• The speed at which velocity dies