# North Carolina Science Grade 7

## Chapter 12: Motion and Momentum

### Acceleration

 1. Calculate the acceleration of a bus whose speed changes from 7 m/s to 16 m/s over a period of 5 s. A) 1.8 m/s2 B) 0.6 m/s2 C) 1.2 m/s2 D) 2.2 m/s2 2. Calculate the acceleration of a bus whose speed changes from 10 m/s to 12 m/s over a period of 6 s. A) 0.6 m/s2 B) 0.3 m/s2 C) 1.2 m/s2 D) 0.8 m/s2 3. Find the acceleration of a train whose speed increases from 9 m/s to 22 m/s in 160 s. A) 1.0 m/s2 B) 0.6 m/s2 C) 0.8 m/s2 D) 1.4 m/s2 4. Find the acceleration of a train whose speed increases from 12 m/s to 22 m/s in 110 s. A) 1.2 m/s2 B) 0.02 m/s2 C) 0.9 m/s2 D) 0.09 m/s2 5. Find the acceleration of a train whose speed increases from 11 m/s to 15 m/s in 60 s. A) 0.09 m/s2 B) 0.02 m/s2 C) 0.07 m/s2 D) 0.1 m/s2 6. A bicycle speed changes from 1 m/s to 5 m/s in 3 s. What is the bicycle's acceleration? A) 1.5 m/s2 B) 0.9 m/s2 C) 1.1 m/s2 D) 1.3 m/s2 7. A bicycle speed changes from 2 m/s to 7 m/s in 4.2 s. What is the bicycle's acceleration? A) 0.9 m/s2 B) 1.2 m/s2 C) 1.5 m/s2 D) 1.9 m/s2 8. A bicycle speed changes from 3.5 m/s to 6.5 m/s in 6 s. What is the bicycle's acceleration? A) 0.5 m/s2 B) 0.8 m/s2 C) 1.2 m/s2 D) 1.5 m/s2 9. A car accelerates from rest to 30 km/s in 4.2 s. What is the car's acceleration? A) 5.2 km/s2 B) 7.1 km/s2 C) 8.0 km/s2 D) 8.2 km/s2 10. A car accelerates from rest to 40 km/s in 4.9 s. What is the car's acceleration? A) 9.0 km/s2 B) 7.2 km/s2 C) 8.8 km/s2 D) 8.2 km/s2