bluemanoemi2222 bluemanoemi2222

10-12-2021
Physics

contestada

A 70 kg man is running up the stairs which is 3m high in 2s.(a)How much work is done by the man?(b)What is the power exerted by the man? (Use g = 10ms 2)

Respuesta :

tinybooyah tinybooyah

10-12-2021

Explanation:

m = 70 kg

s = 3m

t =2s

g = 10 m/s²

(a)How much work is done by the man?

W = Fs

= mg X s

= 70 x 3 x 10

= 210 x 10

= 2100 Joule

(b)What is the power exerted by the man?

P = W/t

= 2100/2

P = 1050 Watt

Answer Link

Otras preguntas

Quick and easy question, does anyone know a word that describes a no physical artifact. Artifacts are usually used for physical objects, but i’m tying to find a

help me please, i would really appreciate it

Which statement is true? Question 1 options: A) – |–13| = 13 B) – |13| = 13 C) |–13| = 13 D) |13| = – 13

what is the degree of the monomial 8m^2n^4

What’s the key point in this What does this mean??? rubbing two solids together often results in static charge so there must be something (electrons) on the ou

Tina´s family is taking a road trip. If they travel for 3.5 hours on the first day, 2 hours on the second day 4.5 hours on the third day, and 4 hours on the fou

Isabel runs 4 miles in 30 minutes. At the same rate, how many miles would she run in 48 minutes?

30.48 as a mixed fraction in simplest form

What is the subject of the sentence below? The manatees are also called sea cows and were once on the endangered species list. -manatees -are called -sea cows

Iodine-131, a radioactive substance that is effective in locating brain tumors, has a half-life of only 8 days. A hospital purchased 24 grams of the substance