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Arisa [49]
2 years ago
13

A cart of 8 kg mass has a force of 16 newtons exerted on it, what is its acceleration?

Physics
1 answer:
Annette [7]2 years ago
8 0
<span>F = MA
A = F / M
A = (16) / (8)
A = 2 m/s^2 </span>
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If the hiker starts climbing at an elevation of 350 ft, what will their change in gravitational potential energy be, in joules,
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Answer:

352,088.37888Joules

Explanation:

Complete question;

A hiker of mass 53 kg is going to climb a mountain with elevation 2,574 ft.

A) If the hiker starts climbing at an elevation of 350 ft., what will their change in gravitational potential energy be, in joules, once they reach the top? (Assume the zero of gravitational potential is at sea level)

Chane in potential energy is expressed as;

ΔGPH = mgΔH

m is the mass of the hiker

g is the acceleration due to gravity;

ΔH is the change in height

Given

m = 53kg

g = 9.8m/s²

ΔH = 2574-350 = 2224ft

since 1ft = 0.3048m

2224ft = (2224*0.3048)m = 677.8752m

Required

Gravitational potential energy

Substitute the values into the formula;

ΔGPH = mgΔH

ΔGPH = 53(9.8)(677.8752)

ΔGPH = 352,088.37888Joules

Hence the gravitational potential energy is 352,088.37888Joules

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