Il) What assumptions do we make when using A) B) C) The Kinematic Equations? Con
ID: 1792263 • Letter: I
Question
Il) What assumptions do we make when using A) B) C) The Kinematic Equations? Conservation of Mechanical Energy? Conservation of Momentum? Iul) Explain why A) You must use conservative forces when defining potential energy B) The work done by a conservative force around any closed loop is zero. C) A force is conservative if the work it does around any closed loop is zero D) A force is conservative if it is only a function of position. E) Friction is not a conservative force. F) The coefficient of static friction is larger than the coefficient of kinetic friction. G) The action and reaction forces of Newton's 3 H) we can never be 100% certain of anything we learn in science I) We cannot "d Law do not cancel out. t understand all physical sciences just by studying physics, which concerns the most fundamental laws and theories V) List the steps of the free body diagram process. ) What is the microscopic origin of friction? ) Give the physical quantity that corresponds to the A) Unit B) Expression Il) How could a measurement be A) Precise but not accurate? B) Accurate but not precise? II) Describe a situation in which the following forces could be centripetal forces A) Gravity B) Friction C) Tension D) Normal/Contact What are the advantages of the metric system of units over other system of units (e g. the British system of unit Describe each of Newton's Laws of Motion.Explanation / Answer
iii)
a) for kinematic equations ,
we made the assumptions that the acceleration is constant.
B) for conservation of mechanical energy
we assume that the work done by non conservative forces is zero
C)
for conservation of momentum
we assume that the net external force acting on the system is 0