Name___KEY _________ Period_____ Date___________Physical Science
Motion- Speed Practice Problems
1. If Steve throws the football 50 meters in 3 seconds, what is the average
speed (velocity) or the football?
Given: t= 3 sec , d= 50 m
Find: s
Work:
Speed = 50 m / 3 s = 16.7 m/s
Formula: Speed = Distance / Time
2. If it takes Ashley 3 seconds to run from the batter’s box to first base at an
average speed (velocity) of 6.5 meters per second, what is the distance she covers
in that time?
Given: t= 3 sec , s=6.5m/sec
Work:
Find: d
Distance = (6.5 m/s)(3 s) = 19.5 m
Formula:
Distance = (speed)(time)
3. Bart ran 5000 meters from the cops at an average speed (velocity) of 6
meters/seconds before he got caught. How long did he run?
Given: d=500m, s= 6m/sec
Find: d
Formula:
Time = Distance
speed
Work:
Formula
Time = 5000m = 833.3 s
6 m/s
1
Name___KEY _________ Period_____ Date___________Physical Science
4. If Justin races his Chevy S-10 down Highway 37 for 2560 meters in 6
seconds, what is his average speed (velocity)?
Given: 2560 meters, 60 seconds
Work:
Speed = 2560 m / 60 s = 42.7 m/s
Find: s
Formula:
Speed = Distance / Time
5. Mike rides his motorcycle at an average speed (velocity) of 20 meters/second
for 500 seconds, how far did he ride?
Given:
s= 20m/s, t=500s
Work:
Distance = (20m/s)(500s) = 10000 m
Find: d
Formula:
Distance = (speed)(time)
6. Sarah backstrokes at an average speed of 8 meters per second. How long will it
take her to complete the race of 200 meters length?
Given: d=200m, s=8m/sec
Work:
Find: t
Formula:
Time = 200 m = 25 s
8 m/s
Time = Distance
speed
7. Tina’s calculations of the tarantula found that the spider was able to cover 20
centimeters in 5 seconds. What was the average speed of the spider?
Given: t= 5sec, d=20cm
Work:
speed = 20 cm / 5s = 4 cm/s
Find: s
Formula:
Speed = Distance / Time
2
Name___KEY _________ Period_____ Date___________Physical Science
7. How many miles does a car move after travelling 45mph for 8 hours?
Given: S = 45mph, T = 8 hours
Work: d = (45mph)x(8 hrs) = 360 miles
Find: D
Formula:
Distance = (speed)(time)
8. How long does it take a car to move 100 miles at a constant speed of 28 mph?
Given: d=100miles, s=28mph
Work: t= 100miles/ 28mph = 3.57 hrs
Find: t
Formula:
Time = Distance
speed
9. A biker rides 35 miles for 5.5 hours. What is the speed of the biker?
Given: d=35 miles, t= 5.5hrs
Work: s= 35 miles / 5.5 hrs = 6.36 mph
Find: s
Formula:
Speed = Distance / Time
10. 3 time trials are taken for a marble rolling for a distance of 3 meters. The times
are 4.5 s, 5 s, and 5.6 seconds. Determine the average time for rolling and then
calculate the average speed for the marble?
Given: d= 3 m, t= 4.5 s, 5 s, and 5.6 s = 4.5 + 5 + 5.6 = 5.03s
3
Work: s = 3 m / 5.03 sec = .59m/s
Find: s
Formula: Speed = Distance / Time
3