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KPE160 Module 1 Latest Exam Questions And 100% Correct Answers
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KPE160 Module 1 Latest Exam Questions And 100%Correct Answers
Biomechanics - Answer How muscles work to control our bodies given the Laws of
Motion.
Motor Learning - Answer How the brain controls our muscles to control motion.
What creates or resists changes in motion? - Answer Energy: energy storage, energy
transfer, and energy dissipation.
Energy Storage - Answer Gravity, inertia, elasticity.
Energy Transfer - Answer Force of gravity, contact and reaction forces.
Energy Dissipation - Answer Various forms of friction.
Interval Scale - Answer Quantitatively measures physical phenomena. 7 base quantities
with units of measure exist derived from empirical universal physical constants.
Fundamental Units - Answer E.g. m, s.
Derived Units - Answer E.g. m/s.
Fundamental Units of Mechanics - Answer Space (m), time (s), and matter (kg).
Space - Answer We assume a 3-dimentional spatial universe exists.
, Distance (d) - Solution The linear measure of space. How far you travel. Represents the
total distance travelled by an object. In linear cases, it is a change in location, not
orientation.
SI units: metres (m).
Planar Angle () - Solution A figure made by two intersecting lines or planes. An angular
measure of space - a piece of the pie.
Units are multiples of dimensionless ratio of arc to the radius of the piece of pie. Use
degrees, radians, or revolutions.
Planar Angle Formula - Solution θ (rad) = a (m) / r (m).
Time (t) - Solution A monotonically increasing quantity related to increasing entropy in
the universe - "entropy's arrow." It is uni-directional - cannot go backwards.
SI units: seconds (s).
Matter - Answer A material world It is any physical body or substance that occupies
space and is capable of being perceived
.
Measures of Matter - Answer Mass, m, volume, V, and density, ρ.
Mass, m - Answer How much matter is in a material body.
SI units: kilograms, kg.
Volume, V- Answer How much space does a material body occupy.
SI units: litres (L). A 10cm * 10cm * 10cm cube = 0.001m^3 (cubic metres).
Density (ρ) - Answer ρ = m (kg) / V (m^3).
SI units: kg/m^3.
The smaller the volume, the more dense something is. The greater the volume, the less
dense something is.
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