Explanation:
It is given that,
Initial velocity of frog, u = 100 m/s
It jumps at an angle of 60 degrees.
(a) Let 
are the x and y components of velocity. It can be calculated as :
(b) Let y is the maximum height reached by the frog. It can be calculated using the third equation of motion as :
At maximum height, 
and a = -g
y = 382.63 meters
(c) Let t is the time taken by the frog to reach its maximum height. It can be calculated as :
t = 8.83 seconds
Hence, this is the required solution.
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The correct value for the rocket speed measured by an observer on earth would be = 14c
<h3>Calculation and of the rocket speed</h3>
To calculate the speed of the rocket we should observe that the rocket and the missile are in a relative motion which are moving on the same direction.
The speed of the rocket = 12c
The speed of the missile = 12c
The individual speed of earth =0c
But, the relative speed of the missile and the Earth is the sum of individual speeds.
Thus, the speed of rocket as measured by an observer on the Earth would be 0 + 14c = 14c.
Therefore, the correct value for the rocket speed measured by an observer on earth would be =14c
Learn more about relative motion here:
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Answer:
hydrogen
Explanation:
pH is a measure of the ion concentration of hydrogen in a solution.
In chemistry, it literally means power of hydrogen ions and it is a measure of the molar concentration of hydrogen ions in a particular solution, thus specifying the acidity, neutrality or basicity of chemical solutions.
Mathematically, the pH of a solution is given by ![pH = -log 10[H^{+}]](https://tex.z-dn.net/?f=pH%20%3D%20-log%2010%5BH%5E%7B%2B%7D%5D)
Hence, a solution with a pH of 7 is neutral.
Also, a solution with a pH below 7 is acidic but basic if it's pH is above 7.
Answer:
c
Explanation:
energy doesnt affect to mass of a object
