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mr Goodwill [35]
3 years ago
12

A small mailbag is released from a helicopter that is descending steadily at 2.00 m/s. After 5.00s what is the speed of the mail

bag
Physics
1 answer:
grandymaker [24]3 years ago
7 0
The acceleration of gravity (on Earth) is 9.8 m/s² downward.

This means that every falling object gains 9.8 m/s more downward speed
every second that it falls.

In 5 seconds of falling, it gains (5 x 9.8 m/s) = 49 m/s of downward speed.

If it was already descending at 2.0 m/s at the beginning of the 5 sec,
then at the end of the 5 sec it would be descending at

                                 (2 m/s  +  49 m/s)  =  51 m/s .
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The speed would be in a decimal? Or do you want it in a fraction?
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Answer:

there will be collision

Explanation:

v_{s} =  speed of sue = 34 m/s

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v_{sv} = speed of sue relative to van  = v_{s} - v_{v} = 34 - 5.20 = 28.8 m/s

d_{s} = stopping distance after brakes are applied

D = distance between sue and van = 160 m

v_{f} = final speed of sue = 0 m/s

a = acceleration = - 1.80 m/s²

Using the kinematics equation

v_{f}^{2} = v_{o}^{2} + 2 a d_{s}

0^{2} = 28.8^{2} + 2 (1.80) d_{s}

d_{s} = 230.4 m

Since  d_{s} < D

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7 0
3 years ago
Which object experiences the greatest gravitational force? A)car B)fire truck C)plane D)human
Svetlanka [38]

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3 0
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an object has a displacement of + 12 m in 6 seconds if the average velocity is found using the equation change in position / ela
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Answer:

+2m/s

Explanation:

average   velocity = displacement traveled / total time taken

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Answer:

Troposphere

Explanation:

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