Question

How would you describe the relationship between the mass of a car and its kinetic energy?

A) As the mass of a car increases, its kinetic energy increases.
B) As the mass of a car increases, its kinetic energy decreases.
C) As the mass of a car decreases, its kinetic energy increases.
D) There is no clear relationship between mass and kinetic energy.

Answer 1

As the mass of the car increases, its kinetic energy increases

Answer 2

Answer:

A) As the mass of a car increases, its kinetic energy increases.

Explanation:

In the graph, the mass of the car is represented on the x-axis, while the kinetic energy is represented on the y-axis. We see that as the value on the x-axis increases, the value on the y-axis increases as well: so, the kinetic energy increases as the mass increases.

More specifically, there is a direct proportionality between the two variables. In fact, the equation that relates kinetic energy and mass is:

$K=\frac{1}{2}mv^2$

where

m is the mass

v is the speed

K is the kinetic energy