Question

A runner ran two laps around a 400m track. She completed the first laps in 50 seconds and then decreased her speed by 5% for the second lap. Find: a) her speed on the first lap b) her speed on the second lap c) her total time for the two laps d) her average speed for the two laps

Answer 1

Answer:

Step-by-step

Answer 2

Hey mate here s you answer
distance = 400 m; time = 50 seconds
distance = rate x time. Solve for rate.
B. distance = 400 m
time for second lap is 50s-0.05(50s) = ?
solve for rate.

C. total time = time for first lap + time for second lap = ?

D. average speed (rate) = total distance/total time.




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