What is the primary function of the device introduced at the beginning of the video?

• To demonstrate the effects of air resistance

• To measure the speed of a projectile

• To calculate the distance traveled by a projectile

• To shoot a projectile using a spring

Tags

NGSS.MS-PS3-1

What happens when the spring is compressed and released?

• The spring remains compressed

• The projectile moves backward

• The projectile is launched forward

• The spring breaks

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

How does the second ball behave when placed on the end of the device and released?

• It remains stationary

• It moves upward

• It falls straight down with a slight outward motion

• It moves in a circular path

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What is the challenge posed to the viewers regarding the two balls?

• To determine which ball is heavier

• To predict which ball will hit the ground first

• To measure the distance each ball travels

• To calculate the speed of each ball

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-1

Why do some people think the ball fired out will stay in the air longer?

• Because it has more energy

• Because it is larger

• Because it is moving horizontally

• Because it is lighter

What does the teacher promise if the students correctly predict the outcome?

• Extra credit

• All A's for the course

• A field trip

• A new device

What sound indicates that students need to do their homework?

• A bell ringing

• A buzzer sound

• A whistle blowing

• A clapping sound

What is the key takeaway from the final demonstration?

• Gravity affects all objects equally, regardless of their motion

• Gravity affects only stationary objects

• Gravity only affects objects moving downward

• Moving objects are not affected by gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What does the slow-motion replay help to illustrate?

• The trajectory of the projectile

• The simultaneous fall of both balls

• The effect of air resistance

• The speed of the projectile