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barxatty [35]
4 years ago
14

A machine uses a force of 200N to do 20,000J of work in 20s. Find the distance the object moved and the power of the machine.

Physics
1 answer:
mamaluj [8]4 years ago
7 0
The distance the object moved is 100 m
the power of the machine is 1000 watts

distance = work/force (because work = force x distance)
distance = 20000/200 = 100
power = work/ time
power = 20000/20 = 1000
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3 years ago
Cliff divers at Acapulco jump into the sea from a cliff 37.1 m high. At the level of the sea, a rock sticks out a horizontal dis
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Answer:

v_x = 4.87 m/s

Explanation:

Height of the cliff is given as

h = 37.1 m

now the time taken by the diver to hit the surface is given as

h = \frac{1}{2}gt^2

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4 years ago
A runner is jogging in a straight line at a
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Answer:

13 km

Explanation:

The bird flies from the runner, to the finish line, and back to the runner.  We can write two equations for the distance it travels:

d = 7.8 km + 7.8 km − 4.9 km/hr × t

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The bird flies a cumulative distance of 13 km.

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3 years ago
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