Free Falling AP Physics I

A college student wants to toss a textbook to his roommate who is leaning out of a window directly above him. He throws the book upwards with an initial velocity of 8.0 m/s. The roommate catches it while it is travelling at 3.0 m/s [up]. How long was the book in the air? (g=9.8 m/s²)

• 107.8 s

• 49 s

• 0.51 s

• 1.1 s

Tags

NGSS.HS-PS2-1

A tennis ball is thrown straight up with an initial speed of 22.5 m/s. It is caught at a distance above the 
ground. How high does the ball rise? (g=9.8 m/s²)

• 1.15 m

• 51.7 m

• 2.29 m

• 25.8 m

Tags

NGSS.HS-PS2-1

Calculate how long it took King Kong to fall straight down from the top of the Empire State Building which is 380 meters high. (g=9.8 m/s²)

• 38.78 seconds

• 8.81 seconds

• 6.23 seconds

• 77.55 seconds

Tags

NGSS.HS-PS2-1

A construction worker accidentally drops a brick from a high scaffold. What is the velocity of the brick after 4.0 s?          (g=9.8 m/s²)

• 19.6 m/s

• 9.8 m/s

• 1.6 m/s

• 39.2 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

You decide to flip a coin to determine whether to do your physics or English homework first. The coin is flipped straight up. If the coin reaches a high point of 0.25 m above where you released it, what was its initial speed?        (g=9.8 m/s²)

• 4.9 m/s

• 9.8 m/s

• 2.21 m/s

• 49.0 m/s

Tags

NGSS.HS-PS2-4

A stone that starts at rest is in free fall for 8.0 s. Calculate the stone's displacement. (g=9.8 m/s²)

• 78.4 m

• 313.6 m

• 156.8 m

• 627.2 m

Tags

NGSS.HS-PS2-1

During a tornado in 2008 the Peachtree Plaza Westin Hotel in downtown Atlanta suffered damage. Suppose a piece of glass dropped near the top of the hotel falling 215 meters.Detemine how long would it take the piece of glass to hit the ground. (g=9.8 m/s²)

• 6.62 s

• 43.88 s

• 21.9 s

• 4.68 s

Tags

NGSS.HS-PS2-1

An object falls from the Transco Tower in Houston and takes 15 seconds to reach the ground. What is its velocity at impact? (g=9.8 m/s²)

• 1102.5 m/s

• 980 m/s

• 2205 m/s

• 147 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

The highest NBA vertical jump belongs to Michael Jordan with a height of 1.21 meters (48 inches). In order for Michael Jordan to have a vertical jump of 1.21 meters, what would be his take-off speed? (g=9.8 m/s²)

• 23.72 m/s

• 11.86 m/s

• 4.87 m/s

• 3.44 m/s

Tags

NGSS.HS-PS2-1

A plane is flying at 9000 meters when one bolt works its way loose and falls to the ground. How long do you have to avoid being hit by it? (g=9.8 m/s²)

• 1836 seconds

• 42.86 seconds

• 918.3 seconds

• 30.3 seconds