Question

question 1 (3 points)
(01.10 mc)
which scenario describes a change in velocity?

a a skydiver that has reached terminal velocity (a constant speed) while falling
b a ride that spins clockwise and then counterclockwise
c a car traveling east at 55 km/hr
d a plane traveling at 600 mph at cruising altitude

Explanation:

To determine a change in velocity, we analyze each option:

• Option a: A skydiver at terminal velocity has constant speed and direction (downward), so velocity is constant.
• Option b: A ride spinning clockwise then counterclockwise changes direction, so velocity (which includes direction) changes.
• Option c: A car traveling east at 55 km/hr has constant speed and direction, so velocity is constant.
• Option d: A plane at cruising altitude with constant speed and direction has constant velocity.

Answer:

b. A ride that spins clockwise and then counterclockwise