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blsea [12.9K]
3 years ago
6

All vehicles are required to stop within how many feet of a railroad crossing when a train is approaching

Physics
1 answer:
Lunna [17]3 years ago
8 0
All vehicles are required to stop within 15 FEET of the railroad crossing when a train is approaching.
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On Venus, the acceleration due to gravity is 8.87 m / s 2 . How far would a 17 g rock fall from rest in 6.5 s if the only force
algol [13]

Answer:

187.38 m

Explanation:

Using the equation of motion

s = ut + 1/2gt²...................... Equation 1

Where s = distance of fall, u = initial velocity of the rock, t = time taken for the rock to fall from rest, g = acceleration due to gravity of venus.

Given: u = 0 m/s ( from rest), t = 6.5 s, g = 8.87 m/s².

substituting into equation 1

s = 0(6.5) + 1/2(8.87)(6.5)²

s = 0 + 374.7575/2

s = 187.38 m.

Hence the rock will fall 187.38 m

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C. When there is too little resistance and the current increases
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Why is it necessary to centrifuge out any precipitate formed in the unknown solution and continue testing the remaining unknown
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