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Dmitry_Shevchenko [17]
3 years ago
13

A velocity vs. time graph is shown. A graph titled Velocity versus Time shows time in seconds on the x axis, numbered 0 to 5, ve

locity in meters per second on the y axis, numbered 0 to 20. A line starts at the origin and ends at (5, 20). What is the acceleration of the object?
Physics
2 answers:
masya89 [10]3 years ago
8 0

Answer:

a+4 m ...

Explanation:

Lisa [10]3 years ago
5 0

Answer:

a = 4 \frac{m}{s {}^{2} }

Explanation:

u for velocity

t for time

a for acceleration

u = a \times t \\ 20 = a \times 5 \\ a =  \frac{20}{5}  \\ a = 4

That's it! Hope I helped!

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3 years ago
A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of +46 N·m is ap
Rom4ik [11]

Answer:

Explanation:

Let Torque due to friction be

F  

Net torque

= 46 - F

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Angular impulse = change in angular momentum

F  x 120 = I X 580

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137 F = 46 x 17

F = 5.7 Nm

b )

Putting this value in first equation

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8 0
3 years ago
A 6kg sled sliding on an icy surface experiences a 6-N frictional force exerted by the ice and the air resistive force of 0.6 N.
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If you were trying to describe the difference between power and work you could say...?
Paha777 [63]

Answer:

Look to the explanation

Explanation:

<u><em>Work done</em></u> is  is the energy transferred to or from an object by means

of a force acting on the object.

Work is positive if energy transferred to the object, and  work is

negative if energy transferred from the object.

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P=F*v

The SI unit of the power is watt (w)

6 0
3 years ago
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