# 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