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3 years ago

13

During a move, Jonas and Matías carry a 115kg safe to the third floor of a building, covering a height of 6.6m.

2 answers:

neonofarm [45]3 years ago

4 0

Answer:

work is =7590joules

power = 23watts

Neporo4naja [7]3 years ago

3 0

Answer:

1) 7590 Joules

2) 23 Watts

Explanation:

1) Work = force × distance

W = mgh

W = (115 kg) (10 m/s²) (6.6 m)

W = 7590 J

2) Power = work / time

P = W / t

P = (7590 J) / (330 s)

P = 23 W

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A watermelon is dropped from the top of a 80m tall building. We want to find the velocity of the watermelon after it falls for 1

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Answer:

$v_f = v_i + at$

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8 0

3 years ago

Read 2 more answers

a child riding a bicycle at 15 meters per second accelerates at -3,0 meters per second? for 4.0 seconds. What is the child's spe

Vika [28.1K]

Answer:

<h2> 27m/s</h2>

Explanation:

Given data

initital velocity u=15m/s

deceleration a=3m/s^2

time t= 4 seconds

final velocity v= ?

Applying the expression

v=u+at------1

substituting our data into the expression we have

v=15+3*4

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v=27m/s

The velocity after 4 seconds is 27m/s

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3 years ago