N<u><em>umber 3</em></u>
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Answer:
Final speed of the train, v = 168.61 m/s
Explanation:
It is given that,
Acceleration of the train,
Time taken, t = 3.85 min = 231 s
Initial velocity of the train, u = 4.6 m/s
We need to find the final velocity (v) of the train. It can be calculated using first equation of motion as :
v = 168.61 m/s
So, the final velocity of the train is 168.61 m/s. Hence, this is the required solution.
Answer:
With air resistance, acceleration throughout a fall gets less than gravity (g) because air resistance affects the movement of the falling object by slowing it down. How much it slows the object down depends on the surface area of the object and its speed
Explanation:
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HAVE A GOOD DAY
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Answer:
-1.46 m/s^2
Explanation:
Write down what is given first:
v0 = 12 m/s
vf = 0 m/s
d = 45 m
We are trying to find acceleration, so we will use the equation vf^2 = v0^2 + 2ad
Plug in the values we have:
0^2 = 12^2 + (2 x 45 x a)
a = - 1.46 m/s^2
Note that this acceleration is negative because the body is slowing down, so the acceleration with be negative, because the change in velocity is negative.