A block slides down a frictionless plane that makes an angle of 30°with the horizontal.The acceleration of the block is: A)9.80 m/s² B)5.66 m/s² C)8.49 m/s² D)0 m/s² E)4.90 m/s²

Question

Quizplus · Accepted Answer

The acceleration of the block is given by the formula:
a = g*sin(theta)
where g is the acceleration due to gravity and theta is the angle of inclination of the plane with respect to the horizontal. 
Substituting the given values, we get:
a = 9.8*sin(30) = 4.9 m/s^2
Therefore, the correct choice is E.

A Block Slides Down a Frictionless Plane That Makes an Angle