Question

A boy of mass 50 kg runs up a staircase of 45 steps in 9 second 5 if the height of each step of the staircase is 15 cm find the power of the boy

Answer 1

Please ask your question carefully, don't do any mistake like you have above.
otherwise your question will not be answered.
thanks!
answer is downstair's meaning---->attachment

Answer 2

Answer:

Hope it helps ☺️☺️☺️☺️