CPPS: Study Guide Exam Questions with Correct Answers

CPPS: Study Guide Exam Questions with Correct Answers When would a car travel at a constant velocity by also be accelerating? - Answer-Turn What is the SI unit for mass? - Answer-kilogram (kg) What is the unit for force? - Answer-N (newtons) What is the unit for speed? - Answer-m/s (meters per second) What is the unit for acceleration? - Answer-m/s^2 (metres per second squared) What is the unit for velocity? - Answer-m/s (meters per second) What is the unit for weight? - Answer-N (newtons) Newton's 1st Law of Motion - Answer-An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force. Newton's 2nd Law of Motion: - Answer-Force = mass x acceleration Newton's 3rd Law of Motion: - Answer-For every action there is an equal and opposite reaction If mass increases, inertia.... - Answer-increases If mass increases, weight... - Answer-increases If net force increases, acceleration - Answer-increases Given the same amount of force; if mass increases, acceleration - Answer-Decreases If velocity increases, momentum - Answer-increases If friction increases, rate of motion - Answer-decreases What is the acceleration if you forced a 50 kg box with 82 N? - Answer-1.64 m/s 2 What is the mass of a box if it accelerated 5 m/s? from a force of 12 N? - Answer-2.4 kg