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Explanation:
At the top of the tree, the velocity of the pebble is purely horizontal so we can calculate it as


Answer:
Negatively charged or positively charged atom is generally termed as ANION/CATION. Short Explanation: If an atom loses electrons or gains protons, it will have a net positive charge and is called a Cation. If an atom gains electrons or loses protons, it will have a net negative charge and is called an Anion.
Explanation:
Answer:
Explanation:
Momentum conservation

Kinetic energy conservation

Solve the system
Answer:
In this case, a body of mass 5 kg kept at a height of 10 m. So the potential energy is given as 5 * 10 *10 = 500 J.