Question

Pablo, whose mass is 60 kg, is moving along at a velocity of 8 m/s. How much kinetic energy does he have?

Answer 1

1920 Joules

Step-by-step explanation:

* means multiply

^ means exponent

kinetic energy is in Joules or J

kinetic energy = 1/2 * mass * (velocity)^2

kinetic energy = 1/2 * 60 * (8)^2

kinetic energy = 1/2 * 60 * (8*8)

kinetic energy = 1/2 * 60 * (64)

kinetic energy = 1920 Joules or 1920 J

Answer 2

KE = 1920 J

General Formulas and Concepts:

Energy

Kinetic Energy Formula:
`\displaystyle KE = (1)/(2)mv^2`

• m is mass (in kg)
• v is velocity (in m/s)

Step-by-step explanation:

Step 1: Define

[Given] m = 60 kg

[Given] v = 8 m/s

Step 2: Find KE

1. Substitute in variables [Kinetic Energy Formula]:
   `\displaystyle KE = (1)/(2)(60 \ kg)(8 \ m/s)^2`
2. Evaluate:
   `\displaystyle KE = 1920 \ J`

Topic: AP Physics 1 Algebra-Based

Unit: Energy