Question

1. which object has a varying speed? (1 point)

a car traveling the speed limit
a fish moving at 2 m/s for 5 minutes
a car slowing from 60 m/s to 0 m/s
a bird flying at 10 m/s for 10 seconds

Explanation:

• A car traveling the speed limit implies a constant speed (assuming it maintains that limit).
• A fish moving at 2 m/s for 5 minutes has a constant speed of 2 m/s.
• A bird flying at 10 m/s for 10 seconds has a constant speed of 10 m/s.
• A car slowing from 60 m/s to 0 m/s has a changing (varying) speed as its speed value is decreasing over time.

Answer:

a car slowing from 60 m/s to 0 m/s