Question

A basketball is dropped from a height of 2.0 m. Ignoring air resistance, what is the speed of the ball as it reaches the floor?

Answer 1

A basketball is dropped from a height of 2.0 m. Ignoring air resistance, what is the speed of the ball as it reaches the floor?

**Solution.**

According the law of conservation of energy we have

$$\frac{Mv^2}{2} = Mgh$$ $$h = 2.0 \text{ meters}$$ $$v = \sqrt{2gh} \approx 6.3 \text{ m/s}$$

**Answer**

$$v = \sqrt{2gh} \approx 6.3 \text{ m/s}$$