Gwen releases a rock at rest from the top of a 40-m tower.If g = 9.8 m/s² and air resistance is negligible,what is the speed of the rock as it hits the ground? A)28 m/s B)30 m/s C)56 m/s D)784 m/s

Question

Quizplus · Accepted Answer

The speed of the rock can be calculated using the formula v = √(2gh), where g is the acceleration due to gravity and h is the height. Substituting the given values, v = √(2 * 9.8 * 40) = 28 m/s.

Gwen Releases a Rock at Rest from the Top of a 40-M