A ball starting from rest at the top of an inclined plane accelerates at 2 m/s² and reaches the bottom of the plane in 3 seconds. What is the length of the plane? A)2 m B)3 m C)5 m D)9 m

Question

Quizplus · Accepted Answer

The length of the plane can be found using the formula for distance covered under constant acceleration: $d = ut + \frac{1}{2}at^2$, where $u$ is the initial velocity (0 m/s, since it starts from rest), $a$ is the acceleration (2 m/s$^2$), and $t$ is the time (3 s). Plugging in these values gives $d = 0 + \frac{1}{2} \times 2 \times 3^2 = 9$ meters.

A Ball Starting from Rest at the Top of an Inclined