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Volgvan
3 years ago
12

A bird flying straight upward at 5 m/s drops a berry when it is 300 m above the ground. How fast is the berry going when it hits

the ground (neglect air resistance) ___ m/s.

Physics
1 answer:
Nikitich [7]3 years ago
5 0

Answer:

v=77.62 m/s

Explanation:

Given that

h= - 300 m

speed of the bird ,u= 5 m/s

Lets take Speed of the berry when it hit the ground = v m/s

we know that ,if object is moving upward

v² = u² - 2 g h

u=Initial speed

v=Final speed

h=Height

Now by putting the values

v² = u² - 2 g h

v² = 5² - 2 x 10 x (-300)                ( take g = 10 m/s²)

v² =25 + 20 x 300

v² ==25 + 6000

v² =6025

v=77.62 m/s

Therefore the final speed of the berry will be 77.62 m/s.

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BlackZzzverrR [31]

Answer:

10.4 m/s

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a = -9.8 m/s²

Find: t

y = y₀ + v₀ t + ½ at²

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t = 1.11 s

Now find the horizontal position of the target after that time:

Given:

x₀ = 6 m

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Find: x

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x = 11.5 m

Finally, find the launch velocity needed to travel that distance in that time.

Given:

x₀ = 0 m

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t = 1.11 s

a = 0 m/s²

Find: v₀

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3 0
3 years ago
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The weight of the space probe on the Jupiter will be 2.5 times the weight of the space probe on earth.

Hence, the correct answer is option C.

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2 years ago
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