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valentina_108 [34]

3 years ago

5

Calculate the average power produced when a car of mass 400 kg accelerates from rest to a speed of 20m/s in a time interval of 1

minute.

1 answer:

IRISSAK [1]3 years ago

6 0

Explanation:

w=F×d 1kg=9.807N

p=w/t 400kg=9.807×400=3922.8N

p=Fd/t

=3922.8×20×1

power=78456 watt

..sorry..if the answer is not right..

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Answer:

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d. 8.55 m/s

d. .87 s

a. 40.8 m

Explanation:

The initial along the x-axis is given by the following formula:

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Hence, the correct option is:

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$V_{oy} = V_{o}Sin\theta\\V_{oy} = (25\ m/s)(Sin\ 20^{o})\\V_{oy} = 8.55\ m/s$

Hence, the correct option is:

<u>d. 8.55 m/s</u>

Now, for the time to reach maximum height:

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Hence, the correct option is:

<u>d. .87 s</u>

<u></u>

For the range of projectile:

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