Question

If a 2 kg ball is traveling at 4 meters per second, what is its kinetic energy?

Answer 1

Answer:

$\displaystyle KE = 32 \ J$

General Formulas and Concepts:

Energy

Kinetic Energy Formula: $\displaystyle KE = \frac{1}{2}mv^2$

• KE is in J
• m is in kg
• v is in m/s

Explanation:

Step 1: Define

Identify variables

m = 2 kg

v = 4 m/s

Step 2: Find KE

1. Substitute in variables [Kinetic Energy Formula]:                                          $\displaystyle KE = (2 \ kg)(4 \ m/s)^2$
2. Simplify:                                                                                                            $\displaystyle KE = 32 \ J$

Topic: AP Physics 1 - Algebra Based

Unit: Energy

Answer 2

Answer:

16 J

Explanation: