CH 2: 1D Kinematics

Question 1

displacement vs distance

Answer 1

displacement: magnitude and direction, a vector (final position minus the initial position)
distance: sum of absolute value of all the magnitudes of displacement (scalar)

Question 2

what is velocity

Answer 2

velocity is displacement/time in that interval. its a vector so it has both a magnitude and direction. using m/s

Question 3

what is speed

Answer 3

speed is distance travelled/time it takes. has no direction so its a scalar.

Question 4

what is acceleration

Answer 4

acceleration is velocity/time and has m/s^2 for units. its also a vector. if there is constant velocity, then acceleration is 0

Question 5

what to look out for when doing graphs

Answer 5

when there’s a straight slope- constant
slope of position vs time graph- velocity. the instant velocity is the tangent
slope of velocity vs time graph- acceleration while the area is displacement
area of acceleration vs time graph- velocity