All categories

3 years ago

Average velocity is different than average speed because calculating average velocity involves ?

Physics

2 answers:

ch4aika [34]3 years ago

7 0

Average velocity is different than average speed because calculating average velocity involves direction.

Answer: Direction

Explanation

Average speed involves taking only the magnitude in the calculation of the distance traveled and the time required whereas Average velocity takes both magnitude and direction in the calculation by taking the displacement occurred with total time.

Therefore, average speed, scalar quantity and average velocity, a vector quantity.

Scalar quantities are physical quantities considering magnitude whereas vector quantities are physical quantities considering magnitude and direction.

Studentka2010 [4]3 years ago

5 0

Direction!

Velocity is a vector quantity and speed is a scalar quantity. Vector quantities includes both magnitude and direction, while scalar quantities only have magnitude. :)

You might be interested in

James and John dive from an overhang into the lake below. James simply drops straight down from the edge. John takes a running s

liraira [26]

Answer:

Both of them reach the lake at the same time.

Explanation:

We have equation of motion s = ut + 0.5at²

Vertical motion of James : -

Initial velocity, u = 0 m/s

Acceleration, a = g

Displacement, s = h

Substituting,

s = ut + 0.5 at²

h = 0 x t + 0.5 x g x t²

$t_{James}=\sqrt{\frac{2h}{g}}$

Vertical motion of John : -

Initial velocity, u = 0 m/s

Acceleration, a = g

Displacement, s = h

Substituting,

s = ut + 0.5 at²

h = 0 x t + 0.5 x g x t²

$t_{John}=\sqrt{\frac{2h}{g}}$

So both times are same.

Both of them reach the lake at the same time.

3 0

3 years ago

The power in an electric circuit varies inversely with the resistance. If the power is 2,200 watts when the resistance is 25 ohm

valentinak56 [21]

Answer:

The value of resistance when power is 1100 watts = $R_{2}$ = 50 ohms

Explanation:

Power $P_{1}$ = 2200 Watts

Resistance $R_{1}$ = 25 ohms

Power $P_{2}$ = 1100 Watts

Resistance $R_{2}$ = we have to calculate

Given that the power in an electric circuit varies inversely with the resistance

⇒ P ∝ $\frac{1}{R}$

⇒ $\frac{P_{2} }{P_{1} }$ = $\frac{R_{1} }{R_{2} }$

⇒ $\frac{1100}{2200}$ = $\frac{25}{R_{2} }$

⇒ $R_{2}$ = 50 ohms

This is the value of resistance when power is 1100 watts.

6 0

4 years ago

How to reduce the energy loss from the study lamp?

AnnZ [28]

Stop using it all the time for some useless things.

7 0

3 years ago

In photosynthesis, carbon dioxide is converted to oxygen and then released.

3241004551 [841]

What is the question yes it is converted to and then released

7 0

3 years ago

Read 2 more answers

According to the Doppler effect what appears to happen when a light source moves further away from an observer

ludmilkaskok [199]

Answer: The correct answer is B. "the electromagnetic waves appear more red in color".

Explanation:

Scientists use the Doppler effect to understand the universe by determining the motion of the object.

Red shift: The apparent frequency of light decreases as the source object in space moves away from us. The light is shifted to red end. The apparent frequency decreases and there is increase in the wavelength of the light.

Blue shift: The apparent frequency of light increases as the object in space moves towards us. The light is shifted to blue end. In this case, there is decrease in the wavelength of the light. The frequency of the wave increases.

In the given problem, when the light source moves further away from an observer, the electromagnetic waves appear red in color.

Therefore, the correct option is (B).

6 0

3 years ago

Read 2 more answers