9. Molly, a stray dog in the city, runs one complete lap around the base a building in exactly 10.0 minutes. The building has a rectangular base with dimensions 132
meters by 153 meters. Find Molly's (a) total distance, (b) total displacement, (c)
average speed, and (d) average velocity.

Explanation:

a) THE TOTAL DISTANCE IS THE PERIMETER OF THE RECTANGULAR BASE

=> P= 2(L + B) = 2(153 +132)= 570 M

b) SINCE THE DOG(MOLLY) RAN A COMPLETE LAP— MEANING SHE WENT RIGHT BACK WHERE SHE STARTED THE DISPLACEMENT IS ZERO

c) speed(ave)= total distance/ time

=> Speed(ave)= 570/(10×60) =0.95m/s

RECALL THAT TIME HS TO BE IN SECONDS.

d) SINCE VELOCITY IS THE RATE OF CHANGE OF DISPLACEMENT

i.e V = displacement / time.

WE KNOW THAT DISPLACEMENT IS ZERO HENCE VELOCITY IS ALSO ZERO

V =0/(10×60) =0 m/s

the answer is 46 mls because when you add the speed per second it increses the speed

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.