<span>An object keeps the same amount of kinetic energy unless it speeds up or slows down.
Kinetic energy can be calculated for any moving object as long as the objects' mass and speed are known.
The unit used when measuring kinetic energy is called a joule.
Kinetic energy can occur in any direction whether up and down or left to right.
<span>
When an objects' mass doubles, its kinetic energy also doubles.</span></span>
Answer:
The pitch stays the same I think
Explanation:
Answer:
the property of liquid are
1 they can flow from one place to another if surface is slanted
2 it cannot be compressed
Answer:
a) 361.7 Hz
b) 318.1 Hz
c) 29.3 m/s
Explanation:
a) Speed of sound in 20 degrees celcius is 343 m/s.
Use v=wavelength*frequency to find wavelength.
343=wavelength*340
wavelegth=1.009 meters
Relative speed of waves to observer A = 343+22 = 365 m/s
Plug it back in.
365=1.009*F
F=361.7 Hz
b) Relative speed of waves to observer B = 343-22 = 321 m/s
Plug it back in.
321=1.009*F
F=318.1 Hz
c) STATIONARY CAR, so 369Hz=v/1.009. v=372.3, 372.3-343=29.3m/s!
A = 1*100 = 100 Ns
b = 10 * 12 = 120 Ns
c = 0.5*1000 = 500 Ns
d = 100 * 2 = 200 Ns
a has least momentum