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A lorry is travelling at 13.5m/s along a stretch of road​

1 Answer

2 votes

Answer:

Proved

Explanation:

This question is incomplete. The complete details are:


v = 13.5m/s --- speed of the lorry


v_2 =50km/h --- speed limit on the road

Required

Prove that the lorry is within the speed limit

To do this, we simply convert the speed of the lorry to km/h.

So, we have:


v = 13.5m/s


1m = 0.001km

and


1s = (1)/(3600)h

So, the expression becomes:


v = (13.5 * 0.001km)/(1/3600h)


v = (0.0135km)/(1/3600h)

Rewrite as:


v = 0.0135km/h * 3600


v = 48.6km/h

48.6km/h is less than 50km/h (the speed limit).

Hence, the lorry is within the speed limit.

User Kashawn
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