Question

1. If a car travels East 60 km for 4 hours. What was the velocity of the car?

Answer 1

Answer:

15km/h East (15m/s East option)

Explanation:

Velocity = (change in) Distance/(change in) Time

The distance here is 60km, and the time is 4h, as given by the question. Therefore the velocity is 60km/4h = 15km/h.

To convert km/h to m/s, we just divide the value by 3.6, 15/3.6= 4.17m/s (2dp), which isn't actually an option here, so I'm assuming maybe a mistake in unit for the question?

'Velocity' is a vector quantity, meaning it has a size and a direction, as opposed to speed, a scalar quantity, which only has size. Therefore we need to add a direction for it to be velocity. The given direction here is east, so the velocity of the car is 15km/h East. (I would choose the 15m/s East as the question likely has a unit error and is closest.)

Hope this helped!