What is the difference in momentum between an 87.2 kg
football player running 2.87 m/s and
a 0.0520 kg bullet moving 789 m/s?

209.236 kg · m/s

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Physics

Momentum

Momentum Formula: P = mv

P is momentum (in kg · m/s)m is mass (in kg)v is velocity (in m/s)Explanation:

Step 1: Define

m₁ = 87.2 kg

v₁ = 2.87 m/s

m₂ = 0.0520 kg

v₂ = 789 m/s

Step 2: Find Momentums

Football Player

Substitute [MF]:                    P = (87.2 kg)(2.87 m/s)Multiply:                                P = 250.264 kg · m/s

Bullet

Substitute [MF]:                    P = (0.0520 kg)(789 m/s)Multiply:                                P = 41.028 kg · m/s

Step 3: Find difference

Define equation:                    P₁ - P₂Substitute:                              250.264 kg · m/s - 41.028 kg · m/sSubtract:                                 209.236 kg · m/s