A scientist wants to calculate the kinetic energy of a cheetah as it chases down its prey. What does the scientist need to measu
2 answers:
Answer:
the cheetah's amount of matter
the cheetah's speed
Explanation:
Kinetic energy is calculated according to the following equation
K.E =
where m represents the mass of the body in kilograms
and v represents the magnitude of the velocity which is know as speed of the body in m/s
Knowing this then, the scientist needs two things from that list:
the cheetah's amount of matter (also known as the mass)
the cheetah's speed
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Answer:
Explanation:
The total charge is distributed over the two objects:
The plate and the rod must have . So the charge transferred from the plate to the rod is:
Number of electrons:
As stated in the statement, we will apply energy conservation to solve this problem.
From this concept we know that the kinetic energy gained is equivalent to the potential energy lost and vice versa. Mathematically said equilibrium can be expressed as
Where,
m = mass
= initial and final velocity
g = Gravity
h = height
As the mass is tHe same and the final height is zero we have that the expression is now: