Question

QUESTION 1 A car travels a distance of 60km in 1 hour. Its speed in Sl unit is A. 16.7ms-1 B. 60kmh -1 C. 2ms-1 D. 1000ms-1​

Answer 1

B. 60 km/h, although A is very close at 60.12 km/h.

Step-by-step explanation:

Speed is Distance/Time. This car travels 60km in 1 hour, or 60 km/h. We can convert 60 km/h into the units offered by the answer options:

Answer options:

A. 16.7m/s Very close: (16.7m/s)*(3600s/h)*(1km/1000m) = 60.12 km/h

B. 60km/h Yes, best answer

C. 2m/s No: (2m/s)*(3600s/h)*(1km/1000m) = 7.2 km/h

D. 1000m/s No: (1000m/s)*(3600s/h)*(1km/1000m) = 3600 km/h