Horizontally Launched Projectiles

Multiple Choice

Billie threw a ball forward with a horizontal velocity of 8.7 m/s. Calculate the ball’s position after 2.3 seconds.

• The position of the ball along the horizontal is 20.01 m, and along the vertical is ‒25.92 m after Billie threw it.

• The position of the ball along the horizontal is 8.7 m, and along the vertical is ‒4.9 m after Billie threw it.

• The position of the ball along the horizontal is 15.5 m, and along the vertical is ‒15.88 m after Billie threw it.

• The position of the ball along the horizontal is 25.3 m, and along the vertical is ‒41.49 m after Billie threw it.

Multiple Choice

Calculate how far a ball will fall if it is thrown forward with a final velocity of 15.65 m/s and lands 17.87 m away horizontally.

• -4.25 m

• -6.40 m

• -10.50 m

• -8.75 m

Multiple Choice

Suppose your physics notebook went sliding off your table with a speed of 1.23 m/s and hit the ground after 0.55 s. Calculate how high the table is from the ground and how far from the table’s edge will the notebook be when it hits the ground.

• The table’s height from the ground is 1.48 m and the distance the notebook travelled from the desk’s edge is 0.68 m.

• The table’s height from the ground is 1.01 m and the distance the notebook travelled from the desk’s edge is 0.56 m.

• The table’s height from the ground is 2.01 m and the distance the notebook travelled from the desk’s edge is 0.79 m.

• The table’s height from the ground is 2.76 m and the distance the notebook travelled from the desk’s edge is 0.92 m.

Multiple Choice

Gravitational acceleration is entirely horizontal.

• True

• False

Multiple Choice

The horizontal and vertical components of projectile motion are inversely proportional.

• True

• False

Multiple Choice

A projectile’s initial vertical velocity is zero.

• True

• False

Multiple Choice

The trajectory of a projectile is always a straight line.

• True

• False

Multiple Choice

The maximum height of a projectile is reached when its vertical velocity component becomes zero.

• True

• False

Multiple Choice

A ball is thrown with a horizontal velocity of 4.5 m/s from a ledge and it fell on the water 5 meters away.
How much time did it take the ball to hit the water?

• 1.11 seconds
• 1.53 seconds

• 2.35 seconds

• 0.87 seconds

Multiple Choice

A ball is thrown with a horizontal velocity of 4.5 m/s from a ledge and it fell on the water 5 meters away.
How high above the water is the ledge?

• 6.05 m
• 7.25 m

• 5.55 m

• 4.50 m