Question

What is the dominant factor that affects the speed of an object that started from rest down a frictionless incline if the only work done on the object is from gravitational forces?

a) Mass of the object
b) Length of the incline
c) Angle of the incline
d) Height of the incline

Answer 1

The dominant factor that affects the speed of an object down a frictionless incline is the angle of the incline.

Step-by-step explanation:

The dominant factor that affects the speed of an object that started from rest down a frictionless incline, when the only work done on the object is from gravitational forces, is the angle of the incline. The acceleration down the incline is given by the equation a = g sinθ, where a represents acceleration, g is the acceleration due to gravity, and θ is the angle of the incline. This acceleration is independent of the mass of the object.