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Leni [432]
3 years ago
15

If the strength of gravity is 9.8 newtons per kilogram, that means:

Physics
2 answers:
PtichkaEL [24]3 years ago
8 0
Each kilogram of mass weighs about 9.8 newtons ... ON EARTH.
Igoryamba3 years ago
4 0
Here, E<span>ach kilogram of mass weighs 9.8 newtons as it's unit value of it.

In short, Your Answer would be Option D

Hope this helps!</span>
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A skier of mass 60 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him 75 m up a 30° slop
postnew [5]

Answer:

Explanation:

Given

mass of skier=60 kg

distance traveled by skier=75 m

inclination(\theta )=30^{\circ}

speed (v)=2.4 m/s

as the skier is moving up with a constant velocity therefore net force is zero

F_{net}=0

Force applied by cable=mg\sin \theta

F=60\times 9.8\times \sin (30)=294 N

work done=F\cdot x

W=294\cdot 75=22.125 J

(b)Power=F\cdot v

P=294\cdot 2.4=705.6 W\approx 0.946 hp

5 0
2 years ago
Sort the statements about heat transfer into the correct columns.
Hoochie [10]

Answer: Conduction- Touch transfer heat and Earth warms air

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Explanation:

5 0
3 years ago
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An astronaut holds a rock 100m above the surface of Planet X. The rock is then thrown upward with a speed of 15m/s, as shown in
Harlamova29_29 [7]

The acceleration due to gravity of the planet X is 1 m/s².

The given parameters;

  • height above the ground, h = 100 m
  • initial velocity of the rock, u = 15 m/s
  • time of motion of the rock, t = 10 s

The acceleration due to gravity is calculated as follows;

h = ut - \frac{1}{2} gt^2\\\\100 = 15(10) - (0.5\times 10^2)g\\\\100 = 150 - 50g\\\\50g = 150-100\\\\50g = 50\\\\g = 1 \ m/s^2

Thus, the acceleration due to gravity of the planet X is 1 m/s²

Learn more here: brainly.com/question/24564606

7 0
2 years ago
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Marysya12 [62]

Answer:

The idea behind space expansion is that after the big bang, the universe started infinitely expanding. It's also called metric expansion. Stephen Hawking's A Brief History of Time goes further into detail on this.

3 0
3 years ago
Read 2 more answers
Someone please help!! Will mark brainliest
11111nata11111 [884]

Answer:

d.

Explanation:

the arrow is starts at 0,0 and ends at 2,2

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2 years ago
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