Question

Convert 45m/s to mph. Choose the best answer to two significant figures.

101mph
45mph
200mph
24mph

Answer 1

Step-by-step explanation:

45 m/s × (3.28 ft/m) × (1 mi / 5280 ft) × (3600 s/h) = 101 mph

This is actually 3 significant figures. To write in 2 significant figures, you must use scientific notation:

1.0×10² mph