#BrainlyFast
Problem:
how long can a 50 kg man cover a flight or stairs that is 3m high his approximate power is 650 watts?
Note:
The formula for power is ( Power = Work ÷ time ). We can find time using the formula ( time = Work ÷ Power )
- We must solve for Force first in order to find time and note that Work = Force × distance
Force = mass × acceleration
= 50 kg × 9.8 m/s² (gravitational acceleration)
= 490 N
Given Data:
F ( Force ) =490 N
d ( distance ) = 3 m
P ( Power ) = 650 Watt
t ( time ) = unknown
Solution:
We can use the formula ( t = (F × d) / P )
t = (F × d) / P
= 490 N × 3 m / 650 Watt
= 1470 J / 650 Watt
= 2.26 seconds
Answer:
The man can cover it for 2.26 seconds
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brainly.ph/question/10968261
