Question

Tessa weighs 425 N and Cindy weighs 300 N. They both climb a flight of stairs to a height of 8 m in 6 seconds.

What can be said about the amount of work done by Tessa when compared with the work done by Cindy?

A.
Tessa does more work than Cindy because she weighs more.

B.
Cindy does more work than Tessa because she weighs less.

C.
Tessa and Cindy do the same amount of work because they both climb to a height of 8 m.

D.
Tessa and Cindy do the same amount of work because they both climb for 6 seconds.

Answer 1

I'm thinking it's B

Answer 2

me too and what grade are you in

Answer 3

I'm in 8th grade

Answer 4

B

Answer 5

me 6th

Answer 6

When I calculate to see the work done (force times distance) Tessa has a larger number because she has a higher weight, but it would make more sense that Cindy would have to work more.

Answer 7

Work is defined like this:\[W=Fd\]where W is work; F is force; and D is distance. Tessa will have to exert greater force because she has to lift a greater mass than Cindy, while they both cover the same distance in the same time.

The answer is A.

Answer 8

Thank you! ^.^