A boat travels at 2.0 m s-1 east towards a port, 2.2 km away. When the boat reaches the port, the passengers travel in a car due north for 15 minutes at 60
km h-1.
Calculate:
a. the total distance travelled
b. the total displacement
c. the total time taken
d. the average speed in m s-1
e. the magnitude of the average velocity

Sound is a disturbance that travels through a medium as a

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?