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CaHeK987 [17]
3 years ago
10

You throw a ball vertically upward, and as it leaves your hand, its speed is 10.0 m/s.

Physics
1 answer:
8090 [49]3 years ago
5 0
The answer is A bc I did the quiz and I got it right
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When you are ice skating, to get started, you push your skate backwards on the ice and, as a result, begin to move forward. Whic
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Consider a car travelling at 60 km/hr. If the radius of a tire is 25 cm, calculate the angular speed of a point on the outer edg
vlabodo [156]

To solve this problem it is necessary to apply the concepts given in the kinematic equations of movement description.

From the perspective of angular movement, we find the relationship with the tangential movement of velocity through

\omega = \frac{v}{R}

Where,

\omega =Angular velocity

v = Lineal Velocity

R = Radius

At the same time we know that the acceleration is given as the change of speed in a fraction of the time, that is

\alpha = \frac{\omega}{t}

Where

\alpha =Angular acceleration

\omega = Angular velocity

t = Time

Our values are

v = 60\frac{km}{h} (\frac{1h}{3600s})(\frac{1000m}{1km})

v = 16.67m/s

r = 0.25m

t=6s

Replacing at the previous equation we have that the angular velocity is

\omega = \frac{v}{R}

\omega = \frac{ 16.67}{0.25}

\omega = 66.67rad/s

Therefore the angular speed of a point on the outer edge of the tires is 66.67rad/s

At the same time the angular acceleration would be

\alpha = \frac{\omega}{t}

\alpha = \frac{66.67}{6}

\alpha = 11.11rad/s^2

Therefore the angular acceleration of a point on the outer edge of the tires is 11.11rad/s^2

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2 years ago
Most scientists believe the Big Bang Theory explains which of the following questions?
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A how our planets and moons formed
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As temperature increase what energy increases
garik1379 [7]
Kinetic energy would increase sir.
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