Forces of Change

Gravity is a

• contact force

• noncontact force

Tags

NGSS.MS-PS2-5

The greater the force acting on an object, the _________________

• greater the acceleration.

• the less the acceleration.

• acceleration stays the same.

Tags

NGSS.MS-PS2-2

Units of force are measured in ______.

• newtons (N)

• distance

• height

If ______ forces are equal, then they are balanced.

• opposing

• unbalanced

Tags

NGSS.3-PS2-1

Ice is considered a smooth surface, because it has ________ friction.

• more

• less

What is the speed of a runner who runs 400 meters in 40 seconds?

• 10 meters/second

• 40 meters/second

• 100 meters/second

• 1,600 meters/second

What is a force?

• a push or pull
• speed or acceleration 
• potential or kinetic energy
• balanced or unbalanced force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the force that causes everything to be pulled down to the Earth?

• friction
• gravity
• balanced
• unbalanced

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

An automobile you are riding in suddenly stops, why does your body continue to go forward?

• An object in motion stays in motion.

• Gravity pulls your body towards the earth.

• Friction makes your body slow down.

Tags

NGSS.MS-PS2-2

A force of 90N is applied to each cart below, which one will accelerate the fastest?

• The cart that weighs 5 kg.

• The cart that weighs 10 kg.

• The cart that weighs 12 kg.

• The cart that weighs 15 kg.