AP Physics 1 - Final Exam Study Guide questions with correct answers

What equation can be used to directly calculate an object's momentum, ρ? CORRECT ANSWER ρ = mv What are the SI units for momentum? CORRECT ANSWER Kg x m/s What equation can be used to directly calculate the change in an object's momentum? CORRECT ANSWER ∆P = mvf - mvi ΔP = FΔt Example of something going through a significant change in Momentum CORRECT ANSWER Someone running into a brick wall The impulse experienced by a body is equivalent to the body's change in what? CORRECT ANSWER momentum Two objects with different masses collide and bounce back after an elastic collision. Before the collision, the two objects were moving at velocities equal in magnitude but opposite in direction. Describe what happens after the collision. CORRECT ANSWER Momentum is transferred and conserved. Kinetic Energy is conserved. What does the law of conservation of momentum state? CORRECT ANSWER M₁V₁i - M₂V₂i = M₁V₁f + M₂V₂f