Task 2: Average speed and average velocity A car travels a distance of 450 km in a straight line for 4.50 hours from Hither to Yon. The car then returns to Hither from Yon in a straight line at 90.0 km/h. Answer the following questions based on this information: a) What is the car's average speed, in km/h, from Hither to Yon for the first part of the trip? b) How long, in hours, did it take for the car to return to Hither from Yon? c) What is the average velocity of the car for the entire (whole) journey, from Hither to Yon, and back to Hither?
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
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a) What is the car’s average speed, in km/h, from Hither to Yon for the first part of the trip?
G: △d=450Km △T=4.50hr
U: v
E v=△d△t
S v=450km4.50hr
S the average speed from Hither to Yon is 100km/h
b)How long, in hours, did it take for the car to return to Hither from Yon?
G: △d=90.0km/h V=100km/h
U: △t
E △t=△dV
S △t=90.0km100km/h
S It took 9.0hr to get back to Hither from Yon
c) What is the average velocity of the car for the entire (whole) journey, from Hither to Yon, and back to Hither?
G △d =450km + 450km = 900km △T=4.50hr+4.50hr=9.0hr
U: V
E v=△d△t
S v=900km9.0hr
S the average velocity for the entire journey is 100km/hr
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