Answer :
Answer:
115.3395 j
Explanation:
K= 1/2mv²= (7.1/2)*5.7² = 115.3395 j
Answer:
115.34 J
General Formulas and Concepts:
Energy
Kinetic Energy Formula: [tex]\displaystyle KE = \frac{1}{2}mv^2[/tex]
- m is mass (in kg)
- v is velocity (in m/s)
Explanation:
Step 1: Define
Identify variables
[Given] m = 7.1 kg
[Given] v = 5.7 m/s
[Solve] KE
Step 2: Solve for KE
- Substitute in variables [Kinetic Energy Formula]: [tex]\displaystyle KE = \frac{1}{2}(7.1 \ kg)(5.7 \ m/s)^2[/tex]
- Evaluate exponents: [tex]\displaystyle KE = \frac{1}{2}(7.1 \ kg)(32.49 \ m^2/s^2)[/tex]
- Multiply: [tex]\displaystyle KE = (3.55 \ kg)(32.49 \ m^2/s^2)[/tex]
- Multiply: [tex]\displaystyle KE = 115.34 \ J[/tex]
Topic: AP Physics 1 - Algebra Based
Unit: Energy
Book: College Physics