A and C
Imagine u are shooting a laser pointer at a mirror this is pretty much what it is
Answer:
The answer is Dependent Variable
Which of the following is NOT a factor in efficiency?<span><span>A.metabolism</span><span>B.type of movement</span><span>C.muscle efficiency</span><span>D.digestion</span></span>
Answer:
The initial velocity is 38.46 m/s.
Explanation:
The horizontal distance travel by the tennis ball = 13 m
The height at which the tennis ball dropped = 56 cm
Now calculate the initial speed of tennis ball.
The vertical velocity is zero.
Below is the calculation. Here, first convert centimetre into kilometre. So, height at which ball dropped is 0.56 km.
![v = \sqrt{2 \times 9.8 \times 0.56} = 3.32 m/s \\](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7B2%20%5Ctimes%209.8%20%5Ctimes%200.56%7D%20%3D%203.32%20m%2Fs%20%5C%5C)
![t = \frac{3.32}{9.8} = 0.338s \\](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7B3.32%7D%7B9.8%7D%20%3D%200.338s%20%5C%5C)
![Ux \times t = 13 \\](https://tex.z-dn.net/?f=Ux%20%5Ctimes%20t%20%3D%2013%20%5C%5C)
![Ux = \frac{13}{0.338} = 38.46 m/s = Initial velocity.](https://tex.z-dn.net/?f=Ux%20%3D%20%5Cfrac%7B13%7D%7B0.338%7D%20%3D%2038.46%20m%2Fs%20%3D%20Initial%20velocity.)
The answer is decompression melting