Question

1. as mass decreases, kinetic energy increases.

true
false

1. as a car slows down, its kinetic energy increases.

true
false

1. kinetic energy is the energy of ______________.

Explanation:

Question 1

The formula for kinetic energy is \( KE = \frac{1}{2}mv^2 \), where \( m \) is mass and \( v \) is velocity. Kinetic energy is directly proportional to mass (when velocity is constant). So if mass decreases, kinetic energy should decrease (assuming velocity is constant, which is implied in the statement's context). Thus the statement is false.

From \( KE=\frac{1}{2}mv^2 \), kinetic energy is directly proportional to the square of velocity. When a car slows down, its velocity decreases. So kinetic energy should decrease, not increase. Thus the statement is false.

Kinetic energy is defined as the energy an object possesses due to its motion. So the blank should be filled with "motion".

Answer:

False

Question 2