Question

If a hummingbird is filmed at 140 frames in one second, there are 140 photos of the hummingbird. If you played the film at 10 frames per second, how long would the film play?

Answer 1

Explanation:

Using dimensional analysis:

140 frames / (10 frames /sec) = 14 seconds

Answer 2

If the hummingbird is filmed at 140 frames in one second, and the film is played at 10 frames per second, then the film would play for 14 seconds.