a. d = 120 + (3/4)*120 = 120 + 90=210 m.
r = d/t = 210m/30s. = 7 m/s. = Avg.
speed.
b. V = (120-90)/30 = 1 m/s. = Average
velocity.
A car travels 120 meters in one direction in 20 seconds. Then the car returns ¾ of the way back in 10 seconds.
a) Calculate the average speed of the car for the first part of the trip.
b) Find the average velocity of the car.
1 answer
1 answer