PS.5.2.1 (5.P.1.1) #2: Schoolnet

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as Work = Force x Distance.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces rub against each other.

Front

How can you reduce friction?

Back

Friction can be reduced by using lubricants, making surfaces smoother, or using wheels.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other. On Earth, it pulls objects toward the center of the planet.

Front

What happens when you apply a force to an object?

Back

When a force is applied to an object, it can cause the object to start moving, stop moving, or change direction.

Front

What is the effect of adding weight to an object in motion?

Back

Adding weight to an object can increase the force of gravity acting on it, which may affect its speed and how it falls.

Front

What is the relationship between mass and gravity?

Back

The more mass an object has, the stronger the gravitational pull it exerts and experiences.

Front

What is the purpose of a parachute?

Back

A parachute slows down the descent of an object by increasing air resistance.

Front

What is air resistance?

Back

Air resistance is a force that opposes the motion of an object through the air, slowing it down.

Front

What is motion?

Back

Motion is the change in position of an object over time.