Ran 300
Asked by maham237 @ in Physics viewed by 166 People
If the same student from problem 13 ran 300 m in 30 seconds the next day, by how much did her speed increase?
Answered by maham237 @
Answer:
1.7 m/s.
Explanation:
We'll begin by calculating the current speed of the student. This can be obtained as follow:
Distance = 250 m
Time = 30 s
Speed =?
Speed = distance /time
Speed = 250 / 30
Speed = 8.3 m/s
Thus, her current speed is 8.3 m/s
Next, we shall determine the speed of the student the next day. This can be obtained as follow:
Distance = 300 m
Time = 30 s
Speed =?
Speed = distance /time
Speed = 300 / 30
Speed = 10 m/s
Thus, her speed the next day is 10 m/s
Finally, we shall determine the increase in the speed of the student. This can be obtained as follow:
Current speed = 8.3 m/s
Next day speed = 10 m/s
Increase in speed =?
Increase in speed = (Next day speed) – (Current speed)
Increase in speed = 10 – 8.3
Increase in speed = 1.7 m/s
Thus, the increase in the speed of the student is 1.7 m/s
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