Forces Unit Test

Front

What is the name of the force that resists the relative motion of two surfaces in contact?

Back

Friction is the force that resists the relative motion of two surfaces in contact.

Front

What is the net force acting on an object?

Back

The net force is the overall force acting on an object when all the individual forces are combined. For example, if there are 6 N forces acting to the right and no forces acting to the left, the net force is 6 N right.

Front

True or False: The amount of friction depends on the weight of the objects pressing together.

Back

True. The amount of friction increases with the weight of the objects in contact.

Front

What causes a skateboard rolling down a hill to eventually stop?

Back

The presence of an unbalanced force (e.g., friction) can cause a moving object to stop.

Front

What is mass?

Back

Mass is the amount of matter in an object, typically measured in kilograms.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the formula for calculating force?

Back

Force (F) is calculated using the formula F = mass (m) × acceleration (a).

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses, such as the Earth and an object.

Front

What is equilibrium in terms of forces?

Back

Equilibrium occurs when the net force acting on an object is zero, resulting in no acceleration.