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Leni [432]
2 years ago
10

a red kangaroo can hop at speeds of 65 km/hr. how much time will it take the kangaroo to hop 0.25 km at that speed?

Physics
1 answer:
daser333 [38]2 years ago
3 0

Time = (distance) / (speed)

Time = (0.25 km) / (65 km/hr)

<em>Time = 0.00385 hour</em>

(That's 13.85 seconds.)

<u />

<u>Better way:</u>

Distance = 0.25 km

Distance = 250 meters

Speed = (65 km/hr) x (1000 m/km) x (1 hr/3600 sec)

Speed = 18.06 m/sec

Time = (250 m) / (18.06 m/s)

<em>Time = 13.85 seconds  </em>

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Answer: 500 s

Explanation:

Speed v is defined as a relation between the distance d and time t:

v=\frac{d}{t}

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v=3(10)^{8}m/s is the speed of light in vacuum

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t is the time it takes to the light to travel the distance d

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t=500 s

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The power of the engine is 320 W.

<u>Explanation:</u>

Power may be defined as the rate of doing work (or) work done per unit time. One unit of energy is used to do the one unit of work.

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To calculate the power, we must know the time taken.

To find the time, use the distance and speed formula which is given by

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Here distance = 5 m and speed = 4 m/s

                              Time = 5 / 4 = 1.25 s.

Now,          Power = work done / time

                              = (F * d) / t  = (80 * 5) / 1.25

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The standard unit of power is watt (W) which is joule per second.

                                                               

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3 years ago
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8 0
2 years ago
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Misha Larkins [42]

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N = Q / q = 1 / 1.1 * 10E-4  = 9091 capacitors

8 0
2 years ago
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