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Dmitry [639]
2 years ago
15

A pingpong ball has 2 kg m/s of momentum when thrown 8 m/s find the mass of the ball

Physics
1 answer:
avanturin [10]2 years ago
4 0

Answer:

0.25 kg

Explanation:

p = mv

2 = m(8)

2/8 = m(8)/8 *cancels

m = 1/4 OR 0.25 kg

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a car whose initial speed is 30 seconds m / s slows uniformly to a stop in 5.00 seconds what was the cars displacement ​
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A ball on a string makes 25.0 revolutions in 9.37 s, in a circle radius 0.450 m. What is it’s velocity?
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3 years ago
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If two charged objects in a laboratory are brought to a distance of 0.22 meters away from each other. What is
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q_2=2.47\times 10^{-4}\ C

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F=\dfrac{kq_1q_2}{r^2}\\\\q_2=\dfrac{Fr^2}{kq_1}\\\\q_2=\dfrac{4550\times (0.22) ^2}{9\times 10^9\times 9.9\times 10^{-5}}\\\\q_2=2.47\times 10^{-4}\ C

So, the charge on the other sphere is 2.47\times 10^{-4}\ C.

7 0
3 years ago
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