Physical Science Unit 6 Review

Front

What is the net force acting on an object at rest?

Back

The net force acting on an object at rest is zero.

Front

What force does the floor exert on a chair when someone sits on it?

Back

The floor exerts an upward force that balances the downward force exerted by the person sitting on the chair.

Front

What is the weight of an object on the moon if it weighs 19.2 newtons?

Back

The weight of the object on the moon is 19.2 newtons.

Front

What is the difference between mass and weight?

Back

The difference between mass and weight is accounted for by the gravitational force.

Front

What is the force required to keep an object at rest?

Back

The force required to keep an object at rest is equal to the opposing forces acting on it.

Front

What is the formula for calculating weight?

Back

Weight = mass × gravitational acceleration (W = m × g).

Front

What is gravitational force?

Back

Gravitational force is the force of attraction between two masses.

Front

What happens to an object's weight if it is taken to a place with lower gravity?

Back

The object's weight decreases if it is taken to a place with lower gravity.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force in the SI system is the newton (N).

Front

How does friction affect the motion of an object on an inclined plane?

Back

Friction opposes the motion of an object on an inclined plane, affecting its acceleration.