3 years ago

If we want to describe work, we must have

Physics

1 answer:

Talja [164]3 years ago

4 0

Energy and time since,

$W=\dfrac{E}{t}$

Hope this helps.

r3t40

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When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees

dolphi86 [110]

Answer:

a) 1.725*10^5 N

b) 3.83*10^3 N

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c) ii) 4.57 kN

Explanation:

See the attachment for calculations

6 0

2 years ago

On Venus, the acceleration due to gravity is 8.87 m / s 2 . How far would a 17 g rock fall from rest in 6.5 s if the only force

algol [13]

Answer:

187.38 m

Explanation:

Using the equation of motion

s = ut + 1/2gt²...................... Equation 1

Where s = distance of fall, u = initial velocity of the rock, t = time taken for the rock to fall from rest, g = acceleration due to gravity of venus.

Given: u = 0 m/s ( from rest), t = 6.5 s, g = 8.87 m/s².

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s = 0(6.5) + 1/2(8.87)(6.5)²

s = 0 + 374.7575/2

s = 187.38 m.

Hence the rock will fall 187.38 m

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3 years ago

An elephant lifts 7 large logs from the ground to a container 5 meters above the ground as part of a zoo demonstration. The elep

Alisiya [41]

The work done by the elephant to lift one log is the force multiplied by the height at which the log has been lifted:
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And so, the total work done to lift the 7 logs is 7 times the work done to lift each log:
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2 years ago

Does heating a cup of<br> Water allow it to dissolve more sugar ? Constant

Anestetic [448]

Answer:

Explanation:

Yes

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3 years ago

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