Name ______Period ______Code # ______
SPEED PROBLEMS
Using the formula v = d/t, solve the following problems on looseleaf paper. Show all work!
1. A motorist travels a distance of 406 km during a 7-hr period. What was the average speed in (a) km/hr (b) m/sec ?
2. During a canoe race, a camper paddles a distance of 406 m in 70 sec. What is the average speed in (a) m/sec and
(b) km/hr ?
3. A rocket launched into outer space travels a distance of 240,000 km during the first 6 hr after the launching. What is the average speed of the rocket?
4. An electron traverses a vacuum tube with a length of 2 meters in 2 x 10-3 sec. What is the average speed of the electron during this time.
5. Light from the sun requires 8.3 minutes to reach the Earth. The speed of light is 3.0 x 108 m/sec. In kilometers, how far is the Earth from the Sun?
6. A bullet leaves the muzzle of a rifle and 5 seconds later becomes embedded in the trunk of a tree 3000 meters away. What is the average speed of the bullet?
7. A boy walks 13 km in 2.0 hours. What is his speed?
8. A high school athlete runs 1.00 x 102 meters in 12.20 seconds. What is her speed?
9. On a baseball diamond, the distance from home plate to the pitcher’s mound is 18.5 meters. If a pitcher is capable of throwing a ball at 38.5 meters/second, how much time does it take a thrown ball to reach home plate?
10. The French train in the example problem is traveling 301 km/hr. When it is 360 meters from a road crossing, the engineer blows the whistle. If the speed of sound is 330 m/sec, how many seconds after the whistle is hear at the crossing will the train cross there?