A block with a mass M = 4.85 kg is resting on a slide that has a curved surface.There is no friction.The speed of the block after it has slid along the slide sufficiently far for its vertical drop to be 19.6 m is
A)19.6 m/s
B)384 m/s
C)73 m/s
D)43.2 m/s
E)The problem cannot be solved because the shape of the curved slide is not given.

Question

Quizplus · Accepted Answer

The speed of the block can be found using the conservation of energy principle, where the potential energy at the top is converted into kinetic energy at the bottom. The formula for this is $v = \sqrt{2gh}$, where $g = 9.8 \, \text{m/s}^2$ and $h = 19.6 \, \text{m}$. Plugging in these values gives $v = \sqrt{2 \times 9.8 \times 19.6} = 19.6 \, \text{m/s}$.

A Block with a Mass M = 4