Respuesta :
Answer:
B. 10 m/s
Step-by-step explanation:
To start off, it wants us to figure out the average speed of the car in the race.
The equation to find speed is distance/time.
[tex]s=\frac{d}{t}[/tex]
Because it is the average speed, this means we can use the total speed and distance of the car in the race.
In the race the car does 8 laps of 300 m. This means the total distance it travels is 8 x 300 m. This comes out as 2400 m.
The question also gives us the Go Kart's total time: 4 minutes.
Now we have the time and distance, we can work out the speed.
2400 m/4 mins = 600 m/min
However, this isn't the final answer because, as you can see in the possible answers, the unit is metres/second. We have metres/minute. This means we have to do a conversion.
When we say the car goes 600 m/min it means the car travels 600 metres in one minute. We can use this to figure out the distance the car travels in one second.
60 seconds make up one minute, meaning a second is one sixtieth of a minute. Knowing this, we can divide 600 m/min by 60 to get the final answer of 10 m/s.
