A student of mass 52 kg climbs a staircase 5 m high in 9 s.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A student of mass climbs a staircase high in . What is the student's power? ()
Need a reminder? The key ideaShow
Power , in watts: . The energy used is , with in seconds.
The worked solution
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Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Work. .
Step 2. Power. .
Answer: about .
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