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Harrizon [31]
3 years ago
11

Calculate the change in velocity of a 0.070kg tennis ball hit by Serena with a force of 140 N over 0.020 s

Physics
1 answer:
Brilliant_brown [7]3 years ago
6 0
V=at and a=F/m

140/.070 = 2000m/s^2

2000*.020 = 40m/s

The ball’s velocity increased by 40m/s.
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Fittoniya [83]

Answer:

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Matter include elements, molecules, humans, etc. In fact, almost every substance on Earth is considered MATTER. Therefore, the fact that a substance must "have mass and volume" is true for all matter.

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nignag [31]
The gravitational force between two objects is given by:
F=G \frac{m_1 m_2}{r^2}
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In this problem, the first object has a mass of m_1=0.60 kg, while the second "object" is the Earth, with mass m_2=5.97 \cdot 10^{24}kg. The distance of the object from the Earth's center is r=1.3 \cdot 10^7 m; if we substitute these numbers into the equation, we find the force of gravity exerted by the Earth on the mass of 0.60 kg:
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5 0
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What is the mass of an atom that has 2 protons, 3 neutrons, and 2 electrons
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3 0
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Which property of potential energy distinguishes it from kinetic energy
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Explanation:

Hope this helps! :)

7 0
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