OCR AS Level Physics: Laws of Motion and Momentum Questions with Verified Answers

▪ Equations of motion - Ansv = u + at, s = 1/2(v+u)t, s = ut + 1/2at2, v2 = u2 + 2as ▪ When do the equations of motion apply? - AnsConstant acceleration, straight line, uniform gravitational field, no air resistance ▪ Newton's First Law of Motion - AnsAn object will remain at rest or continue to move with constant velocity unless acted on by a resultant force ▪ Newton's Third Law of Motion - AnsWhen two objects interact, they exert equal and opposite forces on each other ▪ Properties of Newton Pairs - AnsEqual, opposite, acting on different objects ▪ Newton's Second Law of Motion - AnsThe net force action on an object is directly proportional to the rate of change of momentum and is in the same direction ▪ What is F = ma a special case for? - AnsConstant mass ▪ Equation for linear momentum - AnsMomentum = Mass x Velocity ▪ Why is momentum a vector quantity? - AnsIt's a product of scalar and vector quantities ▪ Net force equals... - AnsRate of change of momentum ▪ Rate of change of momentum equals... - AnsNet forc