Question

70kg man runs up a flight of staurs in 4 sec . The vertical height of the stairs is 4.5 m . Calculate his power

Answer 1

771.75 watt

Step-by-step explanation:

Given,

Mass ( m ) = 70 kg

Distance ( d ) = 4.5 m

Time taken ( t ) = 4 seconds

Power = ?

Now, applying the formula to find power:

`power = (work \: done)/(time \: taken)`

`= \: (f \: * \: d)/(t)`

`= (m \: * \: g \: * \: d)/(t)`

Plugging the values:

`= (70 * 9.8 * 4.5)/(4)`

Calculate the products

`= (3087)/(4)`

Divide:

`= 771.75 \: watt`

Hope this helps...

Best regards!!