Physics
05.03.2020 06:34
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Achild on a bike stops pedaling and coasts. because he is not pedaling he slows
Achild on a bike stops pedaling and coasts. because he is not pedaling he slows down at a rate of 1 m/s^2. in the 5 seconds after he stops pedaling he travels a distance of 62.5 meters. how fast was the child going initially? *
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codie1103
4,6(63 marks)
Explanation:
Let u is the initial speed of the bike. Finally, the bike stops, v = 0
Deceleration of the bike, 
Time, t = 5
Distance covered, s = 62.5 m
We need to find the initial speed of the bike. Using third equation of motion as :
u = 11.18 m/s
So, the initial speed of the bike is 11.18 m/s. Hence, this is the required solution.
lizdeleon248
4,9(70 marks)
the nucleus had a positive charge and is surrounded by negatively charged electrons.
Explanation:
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