What happens to power if the force applied to an object increases, assuming velocity remains constant?

The power increases proportionally, as indicated by the formula $P = \vec{F} \cdot \vec{v}$ .

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What happens to power if the force applied to an object increases, assuming velocity remains constant?

The power increases proportionally, as indicated by the formula $P = \vec{F} \cdot \vec{v}$ .

What happens to power if the time taken to do a certain amount of work decreases?

The power increases, because power is inversely proportional to time ( $P = \frac{dW}{dt}$ ).

What happens to the power if the angle between force and velocity is 90 degrees?

The power is zero, because the dot product of force and velocity is zero when they are perpendicular.

How do you calculate Average Power using energy?

Determine the change in energy ( $\Delta E$ ). 2. Determine the change in time ( $\Delta t$ ). 3. Divide the change in energy by the change in time: $P_{avg} = \frac{\Delta E}{\Delta t}$ .

How do you calculate Average Power using work?

Determine the work done (W). 2. Determine the change in time ( $\Delta t$ ). 3. Divide the work done by the change in time: $P_{avg} = \frac{W}{\Delta t}$ .

How do you calculate Instantaneous Power?

Determine the force (F) acting on the object. 2. Determine the velocity (v) of the object at that instant. 3. Determine the angle ( $\theta$ ) between the force and velocity vectors. 4. Calculate: $P_{inst} = Fv \cos \theta$ .

What is the definition of Power?

The rate at which energy is transferred or transformed.

What is the definition of Average Power?

The average rate at which energy is transferred or converted over a time interval.

What is the definition of Instantaneous Power?

The power at a specific moment in time.

Define Work in Physics.

Energy transferred by a force acting over a distance.

What is a Watt?

The SI unit of power, equivalent to one joule per second (1 W = 1 J/s).

All Flashcards

What happens to power if the force applied to an object increases, assuming velocity remains constant?

The power increases proportionally, as indicated by the formula $P = \vec{F} \cdot \vec{v}$ .

What happens to power if the time taken to do a certain amount of work decreases?

The power increases, because power is inversely proportional to time ( $P = \frac{dW}{dt}$ ).

What happens to the power if the angle between force and velocity is 90 degrees?

The power is zero, because the dot product of force and velocity is zero when they are perpendicular.

How do you calculate Average Power using energy?

Determine the change in energy ( $\Delta E$ ). 2. Determine the change in time ( $\Delta t$ ). 3. Divide the change in energy by the change in time: $P_{avg} = \frac{\Delta E}{\Delta t}$ .

How do you calculate Average Power using work?

Determine the work done (W). 2. Determine the change in time ( $\Delta t$ ). 3. Divide the work done by the change in time: $P_{avg} = \frac{W}{\Delta t}$ .

How do you calculate Instantaneous Power?

Determine the force (F) acting on the object. 2. Determine the velocity (v) of the object at that instant. 3. Determine the angle ( $\theta$ ) between the force and velocity vectors. 4. Calculate: $P_{inst} = Fv \cos \theta$ .

What is the definition of Power?

The rate at which energy is transferred or transformed.

What is the definition of Average Power?

The average rate at which energy is transferred or converted over a time interval.

What is the definition of Instantaneous Power?

The power at a specific moment in time.

Define Work in Physics.

Energy transferred by a force acting over a distance.

What is a Watt?

The SI unit of power, equivalent to one joule per second (1 W = 1 J/s).