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stepan [7]
3 years ago
15

2. A net force is _____.

Physics
1 answer:
Art [367]3 years ago
8 0

The answer would be "the vector sum of forces acting on a particle or body."

Hope that helped ^^

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Uncle Harry weighs 750 N. What is his mass in kg?
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Answer:

W = MG

750 = M * 10

M = 750/10

M = 75 kg

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How is temperature related to the physical change of a substance?
WINSTONCH [101]
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A train moves from rest to a speed of 25 m/s in 30.0 seconds. What is the acceleration?
fredd [130]

Answer:

a = 0.83\ m/s^2

Explanation:

<u>Uniform Acceleration </u>

When an object changes its velocity at the same rate, the acceleration is constant.

The relation between the initial and final speeds is:

v_f=v_o+a.t

Where:

vf  = Final speed

vo = Initial speed

a   = Constant acceleration

t   = Elapsed time

It's known a train moves from rest (vo=0) to a speed of vf=25 m/s in t=30 seconds. It's required to calculate the acceleration.

Solving for a:

\displaystyle a=\frac{v_f-v_o}{t}

Substituting:

\displaystyle a=\frac{25-0}{30}

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4 0
3 years ago
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