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poizon [28]
3 years ago
11

Give an example of a vertical motion with a positive velocity and a negative acceleration. Give an example of a vertical motion

with a negative velocity and a negative acceleration.
Physics
1 answer:
Assoli18 [71]3 years ago
7 0

Answer:

An example of positive velocity is throwing a ball upwards

An example of downward vertical velocity is when an object is dropped, for example a ball dropped from a height

Explanation:

In a vertical movement the acceleration is always downwards, therefore negative since it is created by the attraction of the Earth on the body.

An example of positive velocity is throwing a ball upwards

An example of downward vertical velocity is when an object is dropped, for example a ball dropped from a height

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Answer:

Part a)

When rotated about the mid point

\tau = 0.021Nm

Part b)

When rotated about its one end

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Explanation:

As we know that the angular acceleration of the rod is rate of change in angular speed

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

\alpha = \frac{2.4 - 0}{3.6}

\alpha = 0.67 rad/s^2

Part a)

When rotated about the mid point

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I = 0.0311 kg m^2

now torque is given as

\tau = 0.0311 (0.67)

\tau = 0.021Nm

Part b)

When rotated about its one end

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3 0
3 years ago
An experiment proposes a possible explanation for a natural phenomenon. A experiment must be stated in a way that it can be test
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a) False.

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b) A experiment must be stated in a way that it can be tested by experiments.

True.

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