Given what we know, if a golf ball and a ping-pong ball both move with the same kinetic energy, the ping-pong ball must be traveling at a greater speed.
<h3>How do we know that the ping-pong ball is faster?</h3>
- This has to do with the formula for kinetic energy.
- The formula is
. - This means that mass and velocity are proportional.
- If the total Kinetic energies are equal, the object with the lower mass must have a higher velocity.
- Since ping-pong balls are known to have very little mass, we know it must be traveling faster.
Therefore, we can confirm that if a golf ball and a ping-pong ball both move with the same kinetic energy, the ping-pong ball must be traveling at a greater speed due to its lower mass and the relationship between mass and speed when calculating kinetic energy.
To learn more about kinetic energy visit:
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Loud sound waves have greater __________ and carry more energy than soft ones. *
>><span>amplitude</span>
Energy cannot be CREATED or destroyed, just changed or moved.
The minimum speed with which the athlete must leave the ground is 2.21 m/s
From the question given above, the following data were obtained:
- Maximum Height (h) = 0.25 m
- Final velocity (v) = 0 (at maximum height)
- Acceleration due to gravity (g) = 9.8 m/s²
v² = u² – 2gh (going against gravity)
0² = u² – (2 × 9.8 × 0.25)
0 = u² – 4.9
Collect like terms
u² = 0 + 4.9
u² = 4.9
Take the square root of both side
u = √4.9
u = 2.21 m/s
Thus, the athlete must leave the ground with a minimum speed of 2.21 m/s.
Learn more about projectile motion:
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Tech B is saying correct.
<u>Explanation:</u>
Yes, tires are provided with date codes but those date codes are correlated with manufacturing or production dates and not with the date of discarding. But it is difficult to understand or decode the date code. The tires with 3 digit code represent very old tires while the tires with 4 digit code are made after 1999.
In the four-digit date code, the first two digits indicate the week during which that tire was produced and the last two digits indicate the year of production. So the statement said by Tech A is wrong and the statement said by Tech B is correct.
