Physics
If an object is thrown upwards, what will be its velocity, when it reaches its maximum height?

14.7 m/s
4.9 m/s
0 m/s
20 m/s

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Physics
Absolute Zero is defined as

The temperature at which all molecular motion ceases
At which water boils at 298K
At which liquid Helium boils
At which the volume becomes zero

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Physics
A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that

The metal ball suffers greater change in momentum
Both suffer the same change in momentum
The initial momentum of the rubber ball is greater than that of the metal ball
The rubber ball suffers greater change in momentum

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