a pupil of mass 50 kg runs a flight of 20 stairs each 25cm high in a time of 20 seconds (take g= N/kg calculate the pupil s gain in potential energy
3 answers
answer
PE = mgh
so, how high did she go?
the time does not matter, unless you want the power, which is work/time
oh, yeah -- don't bother making a second post just insisting on an answer. It's annoying, and won't get any faster response.
so, how high did she go?
the time does not matter, unless you want the power, which is work/time
oh, yeah -- don't bother making a second post just insisting on an answer. It's annoying, and won't get any faster response.
Please work it out for me, please help me✍️