Work Force and Motion

Why does a rolling ball stop?

• potential energy

• Friction

• Mass

• Sand

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What pulls a ball back to earth?

• Gas

• Gravity

• Friction

• Molecules

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

An object may move when a _______ is applied to it. 

• force

• gravity

• friction

• speed

Tags

NGSS.MS-PS2-2

_______ is a force that acts between two objects which are touching. This force slows any movement between the two objects.

• pressure

• magnetism

• friction

The energy of something in motion.

• Inertia

• Potential Energy

• Kinetic Energy

• Unbalanced Force

Tags

NGSS.MS-PS3-1

Stored energy; if released this energy will do a lot of work.

• Air Resistance

• Acceleration

• Balanced Force

• Potential Energy

Tags

NGSS.MS-PS3-2

A motion produced by force.

• force

• gravity

• work

• friction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Newton’s second law of motion states that force is equal to—

• length times width times height

• an opposite but equal force

• mass/volume

• mass times acceleration

Tags

NGSS.MS-PS2-2

A 9.3 kg box is accelerating at a speed of 0.85 m/s2 on a conveyor belt. What amount of force is necessary to stop the box from moving?

• 10.9 N

• 7.9 N

• 91.0 N

• 79.1 N

Tags

NGSS.MS-PS2-2

A student completed a 20 mile walk in 2.5 hours. How fast did the student walk?

• 2.5 mph

• 8 mph

• 0.25 mph

• 4 mph