Question

An object is travelling at a speed of 6500. cm per second. Convert the value to the following units: (2.54 cm = 1 inch)
a. Kilometers per minute
b. Feet per hour

Answer 1

1000 meters in 1 kilometer
100 cm in 1 meter.
This is called the factor label method
6500 cm (1 m/100 cm) = 65 m
65 m (1 km/1000 m) = .065 km
now work with the 60 seconds/ 1 minute. Can you finish from here?

Answer 2

I'll convert to feet/second. You do the other one. Post your work if you get stuck. Notice how the units I use cancel between numerator and denominator. 6500 cm/sec to feet/hr.
6500 cm/sec x (1inch/2.54 cm) x (1 foot/12 inches) x(60 sec/min) x (60 min/hr) = ?