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bogdanovich [222]
3 years ago
11

Stephen throws a 0.46 kg football at a speed of 14 m/s and it goes through the goal posts 2.4 m above where he threw it. What is

the kinetic energy of the football as it passes through the goal posts?
Physics
1 answer:
Dovator [93]3 years ago
5 0
  • Answer:
  • \\  \\ 0.46 \times 14 {2 }^{2}  = 90.16 \\

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ZanzabumX [31]

When air resistance is equal to the sack's weight, it will no longer accelerate (so its acceleration will be zero) and will be falling at terminal velocity.

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If you're falling in a forest and there's nobody around, do you ever really crash, or even make a sound?
zalisa [80]

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7 0
3 years ago
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Joe and Bill throw identical balls vertically upward. Joe throws his ball with an initial speed twice as high as Bill. If there
exis [7]

Answer:

the maximum height of Joe's ball will be 4 times Bill's ball.

Explanation:

let bill's velocity be v then Joe's velocity is 2v.

and initial velocities of both bill and Joe are 0

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v^2-u^2= 2gh

h=\frac{v^2}{2gh}

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8 0
3 years ago
A 3600-N Force causes a car to accelerate at a rate of 4m/s2. What is the mass of the car?
Mademuasel [1]

Answer:

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Therefore the mass of the car is 14400 kg

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3 0
3 years ago
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