Forces

A car has a mass of 10 kg. It decelerates at a rate of 3.4 m/s². What force was applied to the car?

• 2.94 m/s²

• 34 m/s

• 29.4 kg

• 34 N

Tags

NGSS.MS-PS2-2

What is the WEIGHT (in Newtons) of a 12.75 kg toddler on Earth?

• 124.95 kg

• 124.95 N

• 124.95 lbs

Tags

NGSS.MS-PS2-4

What is the MASS of a large cow on Earth that has a weight of 4578 Newtons?

• 423.34 kg

• 521.34 kg

• 467.14 kg

• 384.89 kg

Tags

NGSS.MS-PS2-4

An astronaut is standing on the surface of the planet Mars. She has a mass of 60 kg and has a weight of 225 Newtons while on Mars. What is the ACCELERATION DUE TO GRAVITY on Mars?

• 4.25 m/s²

• 3.70 m/s²

• 3.44 m/s²

• 3.75 m/s²

Tags

NGSS.MS-PS2-5

Mass is defined as...

• a measure of the amount of matter ("stuff") in an object

• a measure of gravitational force exerted on an object

• a measure of the amount of space an object occupies

• a measure of the rate of change in the velocity over time

Weight is defined as...

• a measure of the amount of matter ("stuff") in an object

• a measure of gravitational force exerted on an object

• a measure of the amount of space an object occupies

• a measure of the rate of change in the velocity over time

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which of the following is NOT related to an object's mass?

• How much space the object takes up

• How many atoms an object is made of

• How much matter is inside of an object

• How much inertia an object has

Tags

NGSS.MS-PS3-1

The correct equation for momentum is....

• p=m/v

• p=m²v

• p= m/2v

• p = mv

Tags

NGSS.HS-PS2-2

Which of the following statements best describes the Law of Conservation of Momentum?

• An object in motion stays in motion.

• Every force has an equal and opposite force.

• The total momentum of a system before a collision is equal to the total momentum of the system after the collision.

• A force applied onto an object will accelerate.

Tags

NGSS.HS-PS2-2

Which of the following situations is the best example of the Law of Conservation of Momentum?

• A ball flying through the air

• A woman standing on an elevator that is not moving

• A car moving south on I-94 at 67 mph

• One hockey player colliding with another.

Tags

NGSS.MS-PS2-1