Gravity and friction

Reduces friction.

• Contact force

• Lubricant

• Noncontact force

• Momentum

Swimming fish experience-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Applied without touching.

• Mass

• Noncontact force

• Newton

• Contact force

Which of the following is a example of a noncontact force?

• musician playing piano
• athlete hitting a ball with  bat
• a ball falling after you toss it in the air
• karate expert breaking a stack of wood

Wheels on a skateboard most likely experiences-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Makes hair stand on end.

• Electric force

• Magnetic force

• Lubricant

• Normal force

Push or pull on one object by another object.

• Magnetic force

• Force

• Noncontact force

• Contact force

The wheels on a moving skateboard most likely experience ____________.

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

As the child moves down the slide, they mostly experience the effect of ___________.

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

What makes a rolling ball slow down and stop?

• air resistance

• brake

• friction

• gravity