Two balls of mass 10kgs and 100kgs are thrown vertically up at the same speed which ball will pass the point of projection in their downward direction with greater speed?

neither. Galileo figured that out.

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man, never heard of google, or online dictionaries?

To determine which ball will pass the point of projection with greater speed in their downward direction, we can use the principle of conservation of energy.

When the balls are thrown vertically up, they start with an initial velocity. As they reach the highest point of their trajectory, their velocity reduces to zero, and then they start moving downward due to the force of gravity.

The potential energy when the balls are at their highest point is converted into kinetic energy as they move downward. Since both balls were thrown with the same initial velocity, they will reach the same highest point and have the same potential energy.

However, the kinetic energy depends on the mass of the object. Kinetic energy is given by the equation:

Kinetic Energy = (1/2) * mass * velocity^2

Since the mass of the first ball is 10kg and the second ball is 100kg, the second ball has ten times the mass of the first ball. Therefore, according to the equation above, if both balls have the same kinetic energy, the second ball will have a smaller velocity compared to the first ball.

Therefore, the first ball (with a mass of 10kg) will pass the point of projection in its downward direction with greater speed than the second ball (with a mass of 100kg).