Which of the following would NOT be considered a projectile? 

• a cannonball thrown straight up
• a cannon ball rolling down a slope
• a cannonball rolling off a table
• a cannonball thrown in the air

Tags

NGSS.MS-PS2-2

In the absence of air friction, the horizontal component of a projectile's velocity doesn't change as the projectile moves. 

• True
• False
• Sometimes true
• Sometimes false

At the instant a ball is thrown horizontally with a large force, an identical ball is dropped from the same height. Which ball hits the ground first? 

• Neither- they hit at the same time
• the horizontally thrown ball
• the dropped ball
• None of these

Tags

NGSS.MS-PS2-2

What is the horizontal acceleration of a projectile?

• 0 m/s²
• 9.8 m/s²

Tags

NGSS.HS-PS2-1

What is the vertical acceleration of a projectile?

• 0 m/s²

• -9.8 m/s²

Tags

NGSS.HS-PS2-1

An object is projected horizontally from a cliff.  The time it takes to hit the ground is

• more than if it was just dropped
• less than if it was just dropped
• the same amount of time than if it was just dropped
• impossible to determine

Tags

NGSS.MS-PS2-4

When a ball is projected horizontally, what is its initial vertical velocity?

• 10
• 0
• not enough information given

A pool ball leaves a 0.55-meter high table with an initial horizontal velocity of 2.7 m/s. Calculate the horizontal distance (x) between the table's edge and the ball's landing location.

• 0.796 m

• 0.904 m

• 1.176 m

• 1.343 m

A bullet is fired horizontally at a height of 1.3 meters at a velocity of 950 m/s. Assume no air resistance. How long until the bullet reaches the ground?

• 0.52 s
• 0.27 s
• 0.13 s
• 0.36 s

A bullet is fired horizontally at a height of 1.3 meters at a velocity of 950 m/s. Assume no air resistance. How far did the bullet travel horizontally when it hit the ground?

• 252.04 m
• 489.32 m
• 126.02 m
• 346.00 m