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Alja [10]
3 years ago
6

What is kinematics ?? explain !! copied answer = 20 answers reported !! ​

Physics
2 answers:
Marysya12 [62]3 years ago
8 0

Answer:

kinematics is the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion.

the features or properties of motion in an object.

Leto [7]3 years ago
4 0

Answer:

Kinematics is the branch of physics that describes the motion of objects, group of objects etc.....

answered in simple terms!

hope it helps

hv a nyc d

^_^

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A cyclist acceleration from 0m/s to 8m/s in 3second. what is his acceleration?​
umka2103 [35]

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2.66 m/s² .

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In 1976, the SR-71A, flying at 20 km altitude (T = –56 0C), set the official jet-powered aircraft speed record of 3530 km/hr (21
Lapatulllka [165]

To solve this problem we will apply the concepts related to the calculation of the speed of sound, the calculation of the Mach number and finally the calculation of the temperature at the front stagnation point. We will calculate the speed in international units as well as the temperature. With these values we will calculate the speed of the sound and the number of Mach. Finally we will calculate the temperature at the front stagnation point.

The altitude is,

z = 20km

And the velocity can be written as,

V = 3530km/h (\frac{1000m}{1km})(\frac{1h}{3600s})

V = 980.55m/s

From the properties of standard atmosphere at altitude z = 20km temperature is

T = 216.66K

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Velocity of sound at this altitude is

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a = \sqrt{(1.4)(287)(216.66)}

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Ma = \frac{V}{a}

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Ma = 3.312

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T_0 = 689.87K

Therefore the temperature at its front stagnation point is 689.87K

6 0
4 years ago
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