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kari74 [83]
3 years ago
12

If a car with an initial velocity of 10 m/s accelerates at a rate of 50 m/s^2

Physics
1 answer:
expeople1 [14]3 years ago
6 0

Given:

Initial velocity (u) = 10 m/s

Acceleration (a) = 50 m/s²

Time taken (t) = 3 s

To Find:

Final velocity (v)

Answer:

By using equation of motion, we get:

\bf \longrightarrow v = u + at \\  \\  \rm \longrightarrow v  = 10 + 50 \times 3 \\  \\ \rm \longrightarrow v  = 10 + 150 \\  \\ \rm \longrightarrow v  = 160 \: m {s}^{ - 1}

\therefore Final velocity (v) = 160 m/s

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A spring has a force constant of 500.0 N/m. Show that the potential energy stored in the spring is as follows: a. 0.400 J when t
kogti [31]

Answer:

(a) Hence, the potential energy = 0.400 J.

(b) Hence the potential Energy = 0.225 J.

(c) Hence the potential energy = 0 J

Explanation:

Potential Energy; This is the energy of a body, by virtue of its position in the gravitational field. The unit of potential energy is Joules (J)

the potential energy stored in a spring is

Ep = 1/2ke²..................................... Equation 1

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a.

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(b)

When the spring is compressed 3.00 cm, e = 3.00 cm = 3/100 = 0.03 m, and k = 500 N/m.

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Ep = 1/2(500)(0.03)²

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