Florida Science Grade 6

Chapter 17: Motion, Forces, and Simple Machines

Solve a Simple Equation

1
Calculate the speed of a swimmer who swims 150 m in 88 s.
A)2.0 m/s
B)1.1 m/s
C)1.9 m/s
D)1.7 m/s
2
Calculate the speed of a swimmer who swims 200 m in 140 s.
A)1.4 m/s
B)1.0 m/s
C)1.8 m/s
D)1.9 m/s
3
In a 150-m race, a runner finishes in 18.2 s. Calculate the speed of this runner.
A)8.9 m/s
B)7.7 m/s
C)8.2 m/s
D)10.2 m/s
4
In a 500-m race, a runner finishes in 80.4 s. Calculate the speed of this runner.
A)7.8 m/s
B)6.2 m/s
C)4.5 m/s
D)9.0 m/s
5
In a 150-m race, a runner finishes in 18.2 s. And in a second 200-m race he finishes in 29.9 s. In which race was his speed faster?
A)second race
B)first race
C)neither race
D)both races were the same speed
6
In a 150-m race, a runner finishes in 18.2 s. And in a second 100-m race he finishes in 12.3 s. In which race was his speed faster?
A)neither race
B)second race
C)first race
D)both races were the same speed
7
A freight train travels from Louisburg to Hamburg, a distance of 420 km. If the route takes 6.2 h, what is the train's speed?
A)55 km/h
B)67.7 km/h
C)63.2 km/h
D)72.2 km/h
8
A freight train travels from Miamistown to Fredericksburg, a distance of 680 km. If the route takes 12.2 h, what is the train's speed?
A)55.7 km/h
B)66.3 km/h
C)68.8 km/h
D)82.2 km/h
9
A passenger train travels from Larkspur to Collossett, a distance of 210 km. If the route takes 2.4 h, what is the train's speed?
A)90.0 km/h
B)42.3 km/h
C)60.3 km/h
D)87.5 km/h
10
A passenger train travels from Orange Grove to Lyman, a distance of 430 km. If the route takes 5.6 h, what is the train's speed?
A)80.4 km/h
B)72.2 km/h
C)76.8 km/h
D)92.8 km/h
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