Acar is traveling south at a speed of 69 miles per hour and then begins traveling west but continues traveling at the same speed. which of the following has changed?
a. velocity
b. gravity
c. mass
d. speed

Awave travels at a speed of 5.2 m/s. if the distance between crests is 0.40 m, what is the frequency of the wave? use f=v/wavelength a. 13 hz b. 2.1 hz c. 0.077 hz d. 5.6 hz

Difference between series and parallel circuits

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance