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Solved: Relay Race. In a relay race, each contestant runs
Chapter 2, Problem 60P(choose chapter or problem)
Problem 60P
Relay Race. In a relay race, each contestant runs 25.0 m while carrying an egg balanced on a spoon, turns around, and comes back to the starting point. Edith runs the first 25.0 m in 20.0 s. On the return trip she is more confident and takes only 15.0 s. What is the magnitude of her average velocity for (a) the first 25.0 m? (b) The return trip? (c) What is her average velocity for the entire round trip? (d) What is her average speed for the round trip?
Questions & Answers
QUESTION:
Problem 60P
Relay Race. In a relay race, each contestant runs 25.0 m while carrying an egg balanced on a spoon, turns around, and comes back to the starting point. Edith runs the first 25.0 m in 20.0 s. On the return trip she is more confident and takes only 15.0 s. What is the magnitude of her average velocity for (a) the first 25.0 m? (b) The return trip? (c) What is her average velocity for the entire round trip? (d) What is her average speed for the round trip?
ANSWER:
Solution 60P
Step 1 of 4 :
(a)average velocity for the first 25.0 m
Given data,
Displacement,x= 25 m and time taken, t=20s
Average velocity, =
Using given data,
=
Therefore, the average velocity for the first trip is