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harkovskaia [24]
3 years ago
11

4. A 1.0 kg ball has a momentum of 12 kg m/s . What is the ball’ speed?

Physics
2 answers:
valentinak56 [21]3 years ago
6 0

Answer:

12 m/s

Explanation:

Pavlova-9 [17]3 years ago
6 0

Answer:

12m/s

Explanation:from the question, the following were obtained:

Mass = 1kg

Momentum = 12kg.m/s

Velocity =?

Recall

Momentum = Mass x Velocity

Velocity = Momentum / mass

Velocity = 12 / 1

Velocity = 12m/s

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A 0.600 kg block is attached to a spring with spring constant 15 N/m. While the block is sitting at rest, a student hits it with
gulaghasi [49]

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8.8 cm

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m = Mass of block = 0.6 kg

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As the energy of the system is conserved we have

\dfrac{1}{2}mv^2=\dfrac{1}{2}kA^2\\\Rightarrow A=\sqrt{\dfrac{mv^2}{k}}\\\Rightarrow A=\sqrt{\dfrac{0.6\times 0.44^2}{15}}\\\Rightarrow A=0.088\ m\\\Rightarrow A=8.8\ cm

Amplitude of the oscillations is 8.8 cm

At x = 0.7 A

Again, as the energy of the system is conserved we have

\dfrac{1}{2}kA^2=\dfrac{1}{2}mv^2+\dfrac{1}{2}kx^2\\\Rightarrow v=\sqrt{\dfrac{k(A^2-x^2)}{m}}\\\Rightarrow v=\sqrt{\dfrac{15(0.088^2-(0.7\times 0.088)^2)}{0.6}}\\\Rightarrow v=0.31422\ m/s

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