Question

PLS HELP

A rocket moves at the speed of 4.9 miles per second. How fast is the rocket traveling kilometers/hour (km/h)? (1 mile = 1.6 kilometer)

0.0008 km/h
0.0022 km/h
11,025 km/h
28,224 km/h

Answer 1

There is 3600 seconds per hour.
Multiply the speed per second by 3600 to get the speed in miles per hour then convert to kilometer/hour.

4.9 * 3600 = 17,640 miles per hour

17,640 x 1.6 = 28,224 kilometers per hour