Respuesta :
Step-by-step explanation:
We have been given that a lorry is travelling a 13.5 m/s along a stretch of road where the speed limit is 50 km/h.
Let us convert speed of lorry into km/h. Since 1 hour equals 3600 seconds, so we will multiply 13.5 by 3600 to find the distance traveled by lorry in 1 hour
[tex]\text{Distance traveled by lorry in 1 hour}=(13.5\times 3600) \text{meters}}[/tex]
[tex]\text{Distance traveled by lorry in 1 hour}=48600 \text{meters}}[/tex]
1 km = 1000 meters
So to convert speed of lorry into km/h we will divide distance covered by lorry in 1 hour by 1000.
[tex]\text{Speed of lorry}=\frac{48600\text{ meters}}{\text{hour}}\times\frac{1 \text{km}}{1000\text{ meters}}[/tex]
[tex]\text{Speed of lorry}=\frac{48.6\text{km}}{\text{hour}}[/tex]
Since lorry's speed is 48.6 km/h which is less than speed limit of 50 km/h, therefore, we can say that the lorry is traveling below the speed limit.
Answer:
48600/hour × 1/1000= 48.6km/h
Step-by-step explanation:
