Unit 3: Forces and Newton's Laws of Motion

Front

What is Newton's 2nd law of motion?

Back

Force = Mass multiplied by acceleration.

Front

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

Back

They require the same net force.

Front

What type of friction is experienced when riding a skateboard?

Back

Rolling friction.

Front

What is the term for speed in a certain direction?

Back

Velocity.

Front

Why does a sports car speed up faster than a dump truck?

Back

Inertia.

Front

What is the formula for calculating force?

Back

Force = Mass x Acceleration.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is the relationship between mass and acceleration in Newton's 2nd law?

Back

As mass increases, acceleration decreases for a constant force.

Front

What is static friction?

Back

The friction that prevents an object from moving when a force is applied.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity; velocity is a vector quantity that includes direction.