Question

identify whether each situation describes a change in velocity. going downhill, then across flat ground. select driving in a straight line at constant speed. select skating around a curved track. select sitting in a chair. select

Explanation:

Velocity is a vector quantity with speed and direction. Going downhill then across flat - ground changes speed and direction. Driving in a straight line at constant speed has no change in speed or direction. Skating around a curved track changes direction. Sitting in a chair has no motion, so no change in velocity.

Answer:

Going downhill, then across flat ground: Yes
Driving in a straight line at constant speed: No
Skating around a curved track: Yes
Sitting in a chair: No