Define the difference between kinematics and kinetics
Kinematic - positional history - how a rigid body moves (how fast, when,
where)
Kinetics - energy,work and force - why it moves
Difference between velocity and acceleration
Velocity vector - rate of change of displacement and dis...
Best Grades | Must Pass | Latest Update | Correct Answers | 2024/ 2025
HMB470 - Lecture 3 Questions and Correct
Answers | Latest Update
Define the difference between kinematics and kinetics
Kinematic - positional history - how a rigid body moves (how fast, when,
where)
Kinetics - energy,work and force - why it moves
Difference between velocity and acceleration
Velocity vector - rate of change of displacement and distance
Acceleration vector - rate of change of velocity
Define work
The transfer of energy from one body to another
Define power
The rate of work - the product of force + velocity
Define mass
Linear inertia (resistance to linear acceleration) of matter
Define force
The agent by which linear work is done (F)
Define linear momentum
product (p) of mass and velocity - how hard it is to stop
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, Best Grades | Must Pass | Latest Update | Correct Answers | 2024/ 2025
Define linear impulse
Product of force and duration of application - force x interval it acts over
The inertia of an object and its tendency to force rotation are both functions of:
How far the mass or force is from the centre of rotation
The further away a mass is from the centre of rotation = ____ leverage, and an ____ in mass
will ____ acceleration if it is further away from the spinning axis
More, increase, resist
Define moment of inertia
Resistance to angular acceleration around a specified point
Define moment of force
Tendency of a force to cause rotation about , function of how far away it
is from centre of rotation) - determined by magnitude of force and
leverage of moment arm
Why does a figure skater spin faster as she pulls limbs in?
Angular velocity increases, moment of inertia decreases
what is the law of acceleration
Rate of acceleration is proportional to unbalanced load and inversely
proportional to inertia
How does a dumbbell and tape fall at the same rate?
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