Question

Kinetic energy can be calculated using the formula KE = 1/2mv2. What is the kinetic energy of a bicycle that has a mass of 20 kg and is traveling at a velocity of 10 m/sec?​

Answer 1

Answer:

KE = 1000 J

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Physics

Energy

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

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

Explanation:

Step 1: Define

m = 20 kg

v = 10 m/s

Step 2: Find KE

1. Substitute [KE]:                    $\displaystyle KE = \frac{1}{2}(20)(10)^2$
2. Exponents:                          $\displaystyle KE = \frac{1}{2}(20)(100)$
3. Multiply:                               $\displaystyle KE = (10)(100)$
4. Multiply:                               $\displaystyle KE = 1000$