A car is moving with a speed of 15 ms. How long does it take to cover a distance

of 1.2 km?

Answer: 80 s

Explanation:

Speed is expressed in v = d/t, derive the equation so we can have time.

First conert km into meters to cancel out both units and only seconds will remain.

1.2 km x 1000m / 1km = 1200 m

t = 1200 m / 15 m/s = 80 s