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irga5000 [103]
3 years ago
13

Two students are standing on a fire escape, one twice as high as the other. Simultaneously, each drops a ball.

Physics
1 answer:
almond37 [142]3 years ago
4 0
The second ball should strike at double the original t value
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When you catch a baseball with a glove (instead of your hand), the glove helps by
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Answer:D. Impulse

Explanation:

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2 years ago
When you throw a pebble straight up with initial speed V, it reaches a maximum height H with no air resistance. At what speed sh
aev [14]

Answer:

Explanation:

Given

Initial speed is u=V

Maximum height of Pebble is H

Deriving maximum height of Pebble and considering motion in vertical direction

v^2-u^2=2 as

where v=final velocity

u=initial velocity

a=acceleration

s=Displacement

Final velocity will be zero at maximum height

0-(V)^2=2\times (-g)\cdot H

H=\frac{V^2}{2g}

i.e. maximum height is dependent on square of initial velocity

for twice the height

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on comparing

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7 0
3 years ago
Velocity v (m/s)
Sonja [21]

Explanation:

given solution

h=45m v^2=u^2+2gh

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  • v=30
3 0
2 years ago
13. How many electrons does a complete third electron shell hold?
ale4655 [162]

Answer:

  • A) 8

<u>A complete third electron shell holds </u><u>8</u><u> electrons</u>

<u>---------------------------</u>

<u>hope it helps...</u>

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6 0
2 years ago
An astronaut drops a rock from the top of a crater on the moon. When the rock is halfway down to the bottom of the crater, its s
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Answer: vf1/vf2= 1/ sqrt(2)

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if the rock travels H to the bottom we can calculate velocity:

vo=0m/s (drops the rock)  , yo=0

vf*vf= vo*vo+2g(y-yo)

when the rock is halfway  y = H/2 so:

vf1*vf1=2*g*H/2 so vf1 = sqrt(gH)

when the rock reach the bottom y=H so:

vf2*vf2=2*g*H so vf2 = sqrt(2gH)

so vf1/vf2= 1/ sqrt(2)

good luck from colombia

8 0
3 years ago
Read 2 more answers
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