Question

Anuja hit a golf ball on a level field at 70 degrees and 40 degrees with the same total speed as shown below.

70°
40°
Which launch angle causes the ball to be in the air for the longest time?
o not enough information
40 degrees
70 degress
times are the same

Answer 1

Mathis kicked a ball on a level surface at 30∘ and 60∘ with the same total speed as shown below.

Which launch angle results in the greater maximum height for the ball?

Answer: CORRECT (SELECTED)

60

Answer 2

At 40 deg Vy = V sin 40

at 70 deg Vy = V sin 70

So the ball launched at 70 deg has the greatest vertical velocity and will remain in the air the longest:

Since t = Vy / g time for to reach zero vertical velocity and also the time for the ball to reach velocity Vy on the downward path