Force of friction=75 N
Explanation:
we use Newton's second law of motion
F- Ff= ma
F = applied force=250 N
Ff= force of friction
a= acceleration= 5.83 m/s²
m= mass=30 kg
250- Ff= 30 (5.83)
Ff=250-30(5.83)
Ff=250-175
Ff=75 N
Distance = 0.5 x g x t^2 where g is the gravitational force and t is the time required to cover the mentioned distance.
we have g = 9.8 m/sec^2 and distance = 16 cm = 0.16 m
From the above mentioned equation:
t = (2s / g)^0.5
Substituting with the givens, we can calculate t as follows:
t = [(2 x 0.16) / 9.8]^0.5 = 0.1807 seconds
The answer is: [D]: "the position of the moon each month in relation to THE SUN AND THE MOON" .
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Note of interest: The origin of the word "month" was: "moon-th" — but shortened to "month" — (no coincidence!).
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Answer:
D.
Explanation:
Specifically, Special Relativity showed us that space and time are not independent of one another but can be mixed into each other and therefore must be considered as the same object, which we shall denote as space-time. The consequences of space/time mixing are: time dilation. and length contraction.