Introduction to Physics

The gravitational force exerted on an object

• force

• weight

• gravity

• inertia

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

A force that is directed toward the center of a curved or circular path is

• gravity

• centripetal force

• net force

• air resistance

This states that if no external forces act on a group of objects, their total momentum does not change is

• net force

• Newton's 1st law of motion

• Law of conservation of momentum

• Newton's 2nd law of motion

Tags

NGSS.HS-PS2-2

The acceleration of an object toward the center of a curved or circular path

• centripetal force

• centripetal acceleration

• field

• free fall

This states that when an object exerts a force on a second object, the second object exerts a force on the first object that is equal in strength and in the opposite direction is called

• Newton's 1st law of motion

• Newton's 2nd law of motion

• Newton's 3rd law of motion

• Law of conservation of momentum

Tags

NGSS.MS-PS2-1

Convert 0.28-m to cm.

• 0.002 8-cm

• 0.000 28-cm

• 280-cm

• 28-cm

What is the correct way to record the length of the red bar shown?

• 3.4-cm

• 3.04-cm

• 3.43-cm

• 3.425-cm

You are reading the mass of a rock from a digital scale. The display steadily reads 19.7-g for the entire time you are taking the measurement. How should you record this measurement?

• 19.80-g

• 19.7-g

• 19.8-g

• 19.70-g

You are reading the mass of a rock from a digital scale. The display jumps between 25.3-g and 25.4-g while you are taking the measurement. How should you record this measurement?

• 25.3-g

• 25.4-g

• 25.35-g

• 25.40-g

What is the proper way to record the length of the black bar?

• 35-mm

• 35.0-mm

• 30.5-mm

• 30.55-mm