# Physical Science

## Chapter 2: Motion

### Solve a One-Step Equation

 1. Calculate the speed of a swimmer who swims 150 m in 88 s. A) 1.1 m/s B) 1.7 m/s C) 1.9 m/s D) 2.0 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) 10.2 m/s B) 9.2 m/s C) 8.9 m/s D) 8.2 m/s 4. In a 500-m race, a runner finishes in 80.4 s. Calculate the speed of this runner. A) 4.5 m/s B) 7.8 m/s C) 6.2 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) first race B) second 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) first race B) second race C) neither 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) 63.2 km/h C) 67.7 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) 50 km/h B) 55.7 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) 42.3 km/h B) 60.5 km/h C) 87.5 km/h D) 90.0 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) 72.8 km/h B) 76.8 km/h C) 80.4 km/h D) 92.8 km/h