Question

Which statement about the kinetic energy of the ball is true?

A) Kinetic energy is scalar (direction does not matter), and it depends on the ball's mass and height.
B) Kinetic energy is a vector (direction matters), and it depends on the ball's mass and speed as it goes down the hill.
C) Kinetic energy is a vector (direction matters), and it depends on the ball's mass and height.
D) Kinetic energy is a scalar (direction does not matter), and it depends on the ball's mass and speed as it goes down the hill

Answer 1

Kinetic energy is a scalar that depends on the object's mass and speed, with no direction associated with it. The formula K = (1/2)mv² is used to calculate the kinetic energy of an object.

Step-by-step explanation:

The correct statement about the kinetic energy of the ball is D) Kinetic energy is a scalar (direction does not matter), and it depends on the ball's mass and speed as it goes down the hill. Energy, including kinetic energy, is always a scalar quantity and does not possess direction. Kinetic energy is given by the formula K = (1/2)mv², where m is the mass of the object and v is its speed. This equation demonstrates that kinetic energy depends on the mass of the object and the square of its speed, but not on its direction of motion.