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3 years ago

What is velocity, because it describes both speed and direction?

Physics

1 answer:

Vladimir [108]3 years ago

3 0

Answer:

Velocity is a vector quantity. It has both, magnitude and direction. Velocity is the rate of change in the position of a body with respect to a frame of reference. One component is the magnitude of velocity which is speed. The other one is its direction.

Explanation:

Speed is a scalar quantity.

Velocity is a vector quantity.

There are two types of quantities:

1. Scalar quantity:

A scalar quantity is a quantity which is described by its magnitude alone.

2. Vector Quantity:

A vector quantity is a quantity which is described completely by both, its magnitude and direction.

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3 years ago

Describe how the forces of gravity and friction affect the motion that occurs as you write on this page.

Zinaida [17]

Answer:

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2 years ago

A car accelerates from 30 m/s to 50 m/s in 2 seconds. Calculate the cars acceleration

masha68 [24]

Answer:

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3 years ago

A sealed box contains a monatomic ideal gas. The number of gas atoms per unit volume is 5.00 * 1020 atoms>cm3, and the averag

Veronika [31]

Answer:

Pressure,P=6×10^3Pa

Explanation:

The gas has an ideal gas behaviour and ideal gas equation

PV=NKT

T= V/N p/K ...eq1

Average transitional kinetic energy Ktr=1.8×10-23J

Ktr=3/2KT

T=2/3Ktr/K....eq2

Equating eq1 and 2

V/N p/K = 2/3Ktr/K

Cancelling K on both sides

P= 2/3N/V( Ktr)

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3 years ago

A bat can detect small objects such as an insect whose size is approximately equal to the wavelength of the sound the bat makes.

slamgirl [31]

Answer:

size of insect = wavelength = 16.1 mm

Explanation:

Since the bat can detect the size of small insects which are of size equal to the wavelength of sound in air

So here we can say that the wavelength of sound is the ratio of speed of sound and its frequency

here we know that

speed of sound in air is 536 m/s

frequency of sound is 33.3 kHz

so here we can say

$\lambda = \frac{v}{f}$

$\lambda = \frac{536}{33.3 \times 10^3}$

$\lambda = 0.0161 m$

$\lambda = 16.1 mm$

7 0

3 years ago

What is velocity, because it describes both speed and direction?​

What is velocity, because it describes both speed and direction?