Mass, Weight, and Gravity

What is mass?

• A) A measure of the amount of matter in an object

• B) A measure of the gravitational force between two objects

• C) The force that causes all masses to attract one another

• D) A measure of the distance between two objects.

Weight is commonly measured in which units?

• Grams or kilograms

• Newtons or pounds

• Meters or seconds

• Joules or watts

How is weight calculated?

• W = mg

• W = m/g

• W = g/m

• W = m + g

Tags

NGSS.MS-PS2-4

What is the strength of gravity (g) if the weight (W) is 49 N and mass (m) is 5 kg?

• 9.8 N/kg

• 10 N/kg

• 8.8 N/kg

• 7.8 N/kg

Tags

NGSS.MS-PS2-4

If a weight-lifting plate has a mass of 20kg and a weight 208.8 newtons on Saturn, what is the strength of gravity there? (remember round to 2 decimals)

• 10.44 m/s²

• 10.5 m/s²

• 10.4 m/s²

• 10.6 m/s²

Tags

NGSS.MS-PS2-4

What does a 20-kilogram weight lifting plate weigh on Earth?

• 196 N

• 200 N

• 195 N

• 198 N

Tags

NGSS.MS-PS2-4

An astronaut weighs 104 newtons on the moon, where the strength of gravity is 1.6 meters per second. What is her mass?

• 68kg

• 65kg

• 64kg

• 70kg

Tags

NGSS.MS-PS2-4

If a truck weighs 44,000 pounds, how many newtons does it weigh if 1 pound equals 4.448 newtons?

• 195,712 N

• 200,000 N

• 195,000 N

• 196,512 N

A truck drops its load and now weighs 33,000 pounds. What is its weight in newtons, 1 pound equals 4.448 newtons?

• 146,784 N

• 147,000 N

• 148,000 N

• 145,000 N

Determine the gravitational force acting on an astronaut with a mass of 90 kg on Saturn, if gravity is 10.45 N/kg.

• 939 N

• 940 N

• 941 N

• 942 N