Brutus Buckeye is driving East on I-70 at 29.0 m/s when he sees the Nittany Lion mascot driving West on I-70 at 30.5 m/s and waves at him. The Nittany Lion honks his 500 Hz horn as they pass. Assume all travel in this problem happens in a straight line. a. As they travel towards each other, what frequency does Brutus hear.
b. After they pass each other (maintaining their original speeds), what frequency does Brutus hear?
c. All of this honking causes a traffic jam and both cars come to a complete stop 200 m apart. What frequency does Brutus hear now?

Biased means unfair but that's all ik

    m₁v₁ + m₂v₂ = (m₁ + m₂)vmomentum is conserved.the left-hand side of the equation represents the momentum in the system before the collision.the right-hand side represents the momentum in the system after the collisionm₁ and v₁ represents the mass and the velocity of the physics blockm₂ and v₂ represents the mass and velocity of the ball of puttyv represents the final velocity of the combined mass.the question states the two masses stick together. they combined mass has its own velocity with the body mass the sum of the two objects' massestheir combined momentum is (m₁ + m₂)vto find the magitude of (m₁ + m₂)v, we need to add the vectors on the left-hand side of the equation: m₁v₁ + m₂v₂.note the diagram. i have positioned the vectors in accordance with their directions.the magnitude of the resultant can be calculated using the pythagorean theorem since this is a right triangle situation (north and west are perpendicular)|(m₁ + m₂)v| =  √[ (m₁v₁)² + (m₂v₂)² ]|(m₁ + m₂)v| =  √[ (1.5kg·8.0m/s)² + (0.40kg·20m/s)² ]|(m₁ + m₂)v| =  14.4 kg m/sfor two significant figures (assuming that 20m/s is two), this rounds to 14 kg m/s