Forces in Motion Review

Label the image

a

b

air resistance

gravity

Tags

NGSS.MS-PS2-4

Kavana drops a ball from a high bridge on Earth. What is the ball's velocity after 4.2 seconds?

• 41.16 m/s²

• 41.16 m/s down

• 41.16 m/s up

• not enough information

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What two things are true?

• The skydiver probably just opened their parachute

• The net force is 0.1N up

• The net force is 0.1N down

• The skydiver is speeding down towards the ground

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The fighter jet speeds to the right in the upper atmosphere. What is the direction of air resistance?

• right

• left

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Match the following

• unit of speed

• m/s down

• acceleration due to gravity on Earth

• m/s/s or m/s²

• unit of velocity

• seconds

• unit of time

• 9.8 m/s/s

• unit of acceleration

• m/s

Tags

NGSS.MS-PS2-4

An object falls toward the ground. The force of gravity is 1N and the air resistance acting on the object is 0.3N. What is the net force?

• 1.3N up

• 0.7N down

• 0.7N up

• 1.3

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What two things affect air resistance?

• size of the object

• shape of the object

• mass of the object only

• where it is in outer space

Galileo proved that (without air resistance), the _____ of the object does not affect the rate at which it falls toward the ground.

• mass

• shape

• density

Assuming no air resistance, which would land first if dropped from a cliff - a feather or a 15 kg bowling ball?

• they would land at the same time

• 
• 

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

When a skydiver opens their parachute, what is true about air resistance?

• air resistance increases

• air resistance decreases

• air resistance does not change