Question

the total energy of the car is 10 units. the car begins coasting up the hill. partway up the hill, it has 9 units of potential energy. how many units of kinetic energy are there? 4 units 1 unit 2 units 0 units

Explanation:

Step1: Apply the law of conservation of energy

The total energy \(E\) of the car is the sum of its potential energy \(U\) and kinetic energy \(K\), i.e., \(E = U+K\).

Step2: Substitute the given values

Given \(E = 10\) units and \(U = 9\) units. Then \(K=E - U\).
Substituting the values: \(K = 10-9\).

Answer:

1 unit