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Jlenok [28]
3 years ago
13

A golfer badly misjudges a putt, sending the ball only one-quarter of the distance to the hole. The original putt gave the ball

an initial speed of V0. If the force of resistance due to the grass is constant, what would an initial speed in terms of V0 be needed to get the ball to the hole from its original position?
Physics
1 answer:
IRISSAK [1]3 years ago
3 0

Answer:

v = 2 v₀

Explanation:

For this exercise we will use the relationship between work and the change in kinetic energy

          W = ΔK

Where the work is of the friction force, which is always opposed to the movement whereby the angle is 180º

          W = - fr x

The distance for the first case is

         x = 1/4 L

         

We substitute

       -fr ¼ L = ½ m v₀²

        fr L = 2 m v₀²

In the second case, the new speed takes the ball the entire distance

        x = d

        -fr L = ½ m v²

     

We equal the two equations

        2 m v₀² = ½ m v²

        v² = 4 v₀²

        v = 2 v₀

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95 calories

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Which of the following is not a characteristic of the source of rivers and streams?
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You are on the south bank of the river in your canoe you need to reach the north bank you know that you can row your canoe at 2
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Answer:

(θ) = 60°

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2 years ago
The law of conservation of momentum states that the total momentum of interacting objects does not _____. This means the total m
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Answer:

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Imagine a particular exoplanet covered in an ocean of liquid methane. At the surface of the ocean, the acceleration of gravity i
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Answer:

Explanation:

Atmospheric pressure = 7 x 10⁴ Pa

force on  a disk-shaped region 2.00 m in radius at the surface of the ocean due to atmosphere  = pressure x area

= 7 x 10⁴ x 3.14 x 2 x 2

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b )

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= 7 x 10⁴ + 10 x 415 x 6.2

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3 years ago
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