Question

Atrain increases its speed steadly from 10/s to 20m/s in 1minute.
a).what its average speed during this time in m/s
b).How far does it travel while increasing ists speed?

Answer 1

Answer:

900 meters

Explanation:

if it increased its speed steadily at a constant rate, then the average speed for the minute was

(1/2)(10m/s + 20m/s) = 15m/s .

Rolling at an average speed of 15m/s for 1 minute (60 seconds), it travel

(15 m/s) (60 sec = 900 metres.