Projectile Motion

The vertical acceleration

of any projectile ...

• is always 9.8 m/s².

• is always -9.8 m/s².

• depends on the launch velocity.

• depends on the angle of launch.

If a projectile is launched with an initial vertical velocity (Voy) of 60 m/s, how long will it take to reach its highest point?

• 5.98 seconds

• 6.12 seconds

• 6.58 seconds

• 6.92 seconds

A projectile is launched and reaches its peak in 1.2 seconds. What was the initial vertical velocity of the projectile?

• 8.13 m/s

• 9.48 m/s

• 10.75 m/s

• 11.76 m/s

If a projectile reaches its peak in 1.2 seconds, what is the maximum height it reaches?

• 2.95 m

• 3.76 m

• 5.88 m

• 7.06 m

A 5 kg mass and a 10 kg mass are launched horizontally from the same height. Which hits the ground first? (Neglect air resistance)

• The 5 kg mass

• The 10 kg mass

• They will hit at the same time

• It depends on the launch velocity

What is the horizontal acceleration of a projectile?

• 0 m/s²
• -9.8 m/s²

A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65 m/s. Assume no air resistance. How long until the ball reaches the ground?

• 0.45 s
• 0.67 s
• 0.22 s
• 0.47 s

A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?

• 14.3 m
• 30.55 m
• 65 m
• 43.55 m

A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. What is the vertical component of the cannonball’s velocity? What is the horizontal component of the cannonball’s velocity?

• -625 m/s; 625 m/s
• 441.9 m/s; 441.9 m/s
• -441.9 m/s; 441.9 m/s
• 0 m/s; 625 m/s

A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. How long until the cannonball hits the ground?

• 75.4 s
• 45.2 s
• 62.3 s
• 90.2 s

Tags

NGSS.HS-PS2-4