Projectile Motion Review

The horizontal component of a projectile's velocity is independent of...

• it's range
• time
• the vertical component
• none of these

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

• True
• False
• Sometimes true
• Sometimes false

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

In the absence of air resistance, the angle at which a thrown ball will go the farthest is

• 15^o
• 30⁰
• 45^o
• 60⁰

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

What is the vertical acceleration of a projectile?

• 0 m/s²
• 9.8 m/s²

Tags

NGSS.HS-PS2-1

An object is shot directly upward from the ground. T₁ represents the time it takes to reach the maximum height. T₂ represents the time it takes to travel from the maximum height to the ground.

• T1 = T2
• T1 < T2
• T1 > T2
• unable to determine

Tags

NGSS.HS-PS2-1

A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. a) What is the vertical component of the ball’s velocity? b)What is the horizontal component of the ball’s velocity?

• a) 24.9 m/s; b) 60.1 m/s
• a)60.1 m/s; b) 24.9 m/s
• a) 0 m/s; b) 65 m/s
• a + b) 17183.25 m

A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?

• 500.76 m
• 31.63 m
• 103.7 m
• 305.05 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 far did the bullet travel horizontally when it hit the ground?

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