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Elan Coil [88]
2 years ago
9

A tough kid on a tricycle has combined mass 32 kg. She starts from rest and travels 3.5 m in 2.5 s. What is the net force used t

o accelerate. (Hint: d=(1/2)at2)
Physics
1 answer:
Darina [25.2K]2 years ago
8 0

Answer:

<h3>F = 35.84N</h3>

Explanation:

Force = mass * acceleration (Newton's second law of motion)

Given

Mass = 32kg

Get the acceleration using the expression d = 1/2at^2

3.5 = 1/2 (a)2.5^2

3.5 = 3.125a

a = 3.5/3.125

a = 1.12m/s^2

Get the net force;

F =  3.2 * 1.12

F = 35.84N

Hence the net force used to accelerate is 35.84N

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Answer:

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(b) 1/Rp = 1/R' + 1/R'' + 1/R'''

Explanation:

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(a) When the three resistances R'. R'' and R''' is in series combination.

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Voltage across R'', V'' = I R''

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