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Mademuasel [1]
3 years ago
15

A girl runs 40m due south in 40 seconds an d then 20m due north in 10 secondsCalculate.

Physics
1 answer:
m_a_m_a [10]3 years ago
3 0

Answer:

Average speed = 1.2 m/s

Average velocity = 0.4 m/s

Explanation:

Average speed = total distance/total time

Average speed = (40 + 20)/(40 + 10)

Average speed = 60/50

Average speed = 1.2 m/s

Average velocity = displacement/time

Now, she ran 40 m south and ran 20 m back north which is in the direction of where she began the journey.

Thus;

Displacement = 40 - 20 = 20 m

Average velocity = 20/50 = 0.4 m/s

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Part (b): Torque acting on the loop
T = IAB SinФ, where B = Magnetic field, Ф = Angle
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3 years ago
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Nostrana [21]

Answer:

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Explanation:

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6 0
3 years ago
An airplane cruises at 900 km/h relative to the air. It is flying from Denver, Colorado, due west to Reno, Nevada, a distance of
Ulleksa [173]

Answer:

26.5 minutes

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On the other hand, when it returns from Reno to Denver in the due-East direction, the due-East wind with speed of 80km/h would add to the ground speed by 80 km/h

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4 0
3 years ago
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sertanlavr [38]

Explanation:

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2000 grams

6 0
2 years ago
4. A little boy pushes a wagon with his dog in it. The mass of the dog and
Artyom0805 [142]

Answer:

<h2>59.5 N</h2>

Explanation:

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Hope this helps you

6 0
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