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3 years ago

Name three forces involved in brushing your teeth.

Physics

1 answer:

Viefleur [7K]3 years ago

3 0

Three forces involved in brushing your teeth are first push, then pull, then push.

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Which statement best describes the difference between acceleration and velocity?

Sloan [31]

C. is the answer because acceleration is the change in velocity in time while velocity is speed with a direction

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3 years ago

Which is an example of a mixture made of parts that can easily be separated?

Gemiola [76]

Answer

sand and water is an example of a mixture made of parts that can easily be separated

Explatnation

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3 years ago

The proper time between two events is measured by clocks at rest in a reference frame in which the two events: The proper time b

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2 years ago

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When the pendulum bob reaches the mean position, the net force acting on it is zero. Why then does it swing past the mean positi

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Answer:

<u>The pendulum bob swing past the mean position because:</u>

When a pendulum's bob is accelerating at its extreme position its velocity is zero. Due to the restoring toque the bob starts to accelerates towards its mean postion. The maximum acceleration of the pendulum's bob is $-w^{2} A$ and the the acceleration decreases as $-w^{2} x$ towards the mean position.

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6 0

3 years ago

a volleyball is hit upward with an initial velocity of 7.5 m/s. calculate the displacement of the volleyball when its final velo

Luden [163]

Answer:

The displacement of the volleyball is 2.62 m

Explanation:

Given;

initial velocity of the volleyball, u = 7.5 m/s

final velocity of the volleyball, v = 2.2 m/s

displacement of the volleyball, d = ?

Apply the following kinematic equation;

v² = u² - 2gd

2gd = u² - v²

$d = \frac{u^{2}-v^{2} }{2g}\\\\d = \frac{7.5^{2}-2.2^{2} }{2*9.8}\\\\d = 2.62 \ m$

Therefore, the displacement of the volleyball is 2.62 m

7 0

3 years ago