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3 years ago

14

The asteroid, Ida, has a small moon, Dactyl, that orbits at a speed of 5.66 m/s in an orbit of radius 90, 000m . What is Ida's m

ass?

1 answer:

cricket20 [7]3 years ago

4 0

Answer:

4.3 x 10^16 kg

Explanation:

M = rv^2/G =[90,000 x 5.66^2] / [6.67 x 10^-11]

M = 43,226,446,776,611,694 = 4.3 x 10^16 kg - Ida's mass.

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Answer:

In 2.748 sec the mailbag reached the ground

Explanation:

We have given height from the ground $h=3.25t^3$

At t =2.25 sec helicopter releases a small mailbag so at t = 2.25 sec height from the ground $h=3.25t^3=3.25\times 2.25^3=37.01m$

When the mail box is drooped its initial velocity would zero so u = 0 m/sec

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According to third law of motion $h=ut+\frac{1}{2}gt^2$

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During an auto accident, the vehicle's air bags deploy and slow down the passengers more gently than if they had hit the windshi

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Answer: 0.28 m

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Using the equation of motion, we need to find the initial velocity,

$v-u=at$

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now, using third equation of motion,

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we can find out the distance traveled by the person before coming to complete stop.

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