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Dvinal [7]
3 years ago
11

The water skier has a mass of 73 kg. Find the magnitude of the

Physics
1 answer:
Papessa [141]3 years ago
6 0

To solve this problem we will apply the linear motion kinematic equations, specifically the concept of acceleration as a function of speed and time, as well as Newton's second law.

PART A) Acceleration can be described as changing the speed in a period of time therefore,

a = \frac{V}{t}\\a = \frac{11}{8}\\a = 1.375m/s^2

Force is the proportional change between mass and acceleration therefore

F = (73)(1.375)

F= 100.375N

PART B) We will apply the same concept given but now we will change the time to 21s therefore:

a = \frac{V}{t}\\a = \frac{11}{21}\\a = 0.5238

Now the force

F = (73)(0.5238)

F = 38.23N

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kiruha [24]

Answer:

a) t = 20 [s]

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Explanation:

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a)

v_{f}=v_{i}-(a*t)

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b)

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x - xo =  1000 [m]

1000 [m] = 1 [km]

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3 years ago
If you traveled 90 km in 0.50 hours, what <br><br> was your average speed
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