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Arisa [49]
2 years ago
5

A punter wants to kick a football so that the football has a total flight time of 4.70s and lands 56.0m away (measured along the

ground). Neglect drag and the initial height of the football.
How long does the football need to rise?

What height will the football reach?

With what speed does the punter need to kick the football?

At what angle (θ), with the horizontal, does the punter need to kick the football?
Physics
1 answer:
Sindrei [870]2 years ago
3 0

Answer:

Explanation:

How long does the football need to rise?

4.70/3 = 2.35 s

What height will the football reach?

h = ½(9.81)2.35² = 27.1 m

With what speed does the punter need to kick the football?

vy = g•t = 9.81(2.35) = 23.1 m/s

vx = d/t = 56.0/4.70 = 11.9 m/s

v = √(vx²+vy²) = 26.0 m/s

At what angle (θ), with the horizontal, does the punter need to kick the football?

θ = arctan(vy/vx) = 62.7°

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Answer:

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Explanation:

Given that,

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Answer:

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The mass of the car?
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Answer:

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Explanation:

The formula for kinetic energy is:

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