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Lesechka [4]
2 years ago
8

Jess kicks a soccer ball, and it rolls across the ground. The force diagram shows all the forces acting on the ball at the momen

t Jess kicks it. Which arrow represents a friction force?

Physics
2 answers:
juin [17]2 years ago
7 0
Arrow at the left side pointing towards right side represents the frictional force as it always acts opposite to motion
pochemuha2 years ago
5 0

Answer: the left arrow

Explanation:

Friction is a force that opposes the motion of an object. Friction is due to the contact between the surface of the object in motion and the surface on which the object is moving, and its direction is always opposite to the direction of motion of the object.

In this problem, we see that the object is moving towards the left: therefore, the friction must act towards the right, as shown by the left arrow.

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Answer:

A) 0.957 J

Explanation:detailed explanation and calculation is shown in the image below

8 0
2 years ago
A sharpening wheel is traveling at 5 rad/s, it slows down to rest in 30 seconds while sharpening an axe. What is its angular acc
Ratling [72]

Answer:

Angular acceleration = 0.167 rad/s^2

Explanation:

Given

Initial Angular velocity (w1) = 5 rad/s

Final Angular velocity (w2) = 0 rad/s

Time taken to change velocity from w1 to w2 = 30 seconds

Angular acceleration is equal to the change in angular velocity to the time taken for making thing change

Hence, Angular acceleration

\frac{w_2 -w_1}{t} \\\frac{5-0}{30}\\0.167rad/s^2

3 0
2 years ago
Water in the lake behind hoover dam is 221 m deep. part a what is the gauge water pressure at the base of the dam?
iragen [17]
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4 0
2 years ago
Read 2 more answers
A pendulum of 50 cm long consists of small ball of 2kg starts swinging down from height of 45cm at rest. the ball swings down an
Ket [755]

Assuming that all energy of the small ball is transferred to the bigger ball upon impact, then we can say that:

Potential Energy of the small ball = Kinetic Energy of the bigger ball

Potential Energy = mass * gravity * height

Since the small ball start at 45 cm, then the height covered during the swinging movement is only:

height = 50 cm – 45 cm = 5 cm = 0.05 m

Calculating for Potential Energy, PE:

PE = 2 kg * 9.8 m / s^2 * 0.05 m = 0.98 J

Therefore, maximum kinetic energy of the bigger ball is:

<span>Max KE = PE = 0.98 J</span>

5 0
2 years ago
Hoosier Manufacturing operates a production shop that is designed to have the lowest unit production cost at an output rate of 1
abruzzese [7]

Answer:

90.77%

its capacity utilization rate for the month is 90.77%

Explanation:

The capacity utilisation rate can be expressed mathematically as;

Capacity utilisation rate = capacity used/Best operating level × 100%

Given;

Total Number of production time = 205hours

Production output/capacity used = 21400 units

Best operation rate = 115units/hour

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=115units/hour × 205 hours = 23575 units

Capacity utilisation rate = 21400/23575 × 100%

= 90.77%

3 0
2 years ago
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