Marta is training for the track team. She can run 100m in 20 seconds. What is Marta’s speed in metres per second? How far can Marta run in 4 minutes if she is running at the same speed? How long would it take Marta to run in 2000m if she was running at the same speed?

Answer 1

To calculate Marta's speed in metres per second, we divide the distance by the time:

Speed = Distance / Time
Speed = 100m / 20s
Speed = 5m/s

Therefore, Marta's speed is 5 metres per second.

To calculate how far Marta can run in 4 minutes (240 seconds) at the same speed, we multiply the speed by the time:

Distance = Speed x Time
Distance = 5m/s x 240s
Distance = 1200m

Marta can run 1200m in 4 minutes at the same speed.

To calculate how long it would take Marta to run 2000m at the same speed, we divide the distance by the speed:

Time = Distance / Speed
Time = 2000m / 5m/s
Time = 400s

It would take Marta 400 seconds to run 2000m at the same speed.