- A jogger jogs around a circular track with a diameter of 275 m in 15 minutes. What was the jogger’s average speed in m/s?
_________ m/s
2. A group of college students eager to get to Florida on a spring break drove the 650-mi trip with only minimum stops. They computed their average speed for the trip to be 54.4 mi/h. How many hours did the trip take?
__________ h
3. An airplane flying directly eastward at a constant speed travels 289 km in 2.0 h.
(a) What is the average velocity of the plane?
_________ km/h
(b) What is its instantaneous velocity?
__________km/h
4. A ball is dropped from the top of a 87-m-high building. What speed does the ball have in falling 2.8 s?
__________ m/s
5. A race car goes around a level, circular track with a diameter of 1.00 km at a constant speed of 93 km/h. What is the car’s centripetal acceleration in m/s2?
________ m/s2
