Motion and Speed Practice Test
 1. A(n) __________ is a push or a pull that one body exerts on another.
 a. force b. acceleration c. velocity d. motion
 2. Which of the following is not an acceleration?
 a. riding your bike faster when you ride down a hill b. stopping your bike at an intersection c. slowing your bike ride so you can make it up a hill d. riding your bike straight down the street at a constant speed
 3. If you travel 1.7 km north from your house at noon, and at 6:00 PM you travel 5.4 km south, what is your displacement?
 a. 3.7 km b. 7.1 km south c. 7.1 km north d. 3.7 km south
 4. The distance between the final position and the starting position is the __________.
 a. acceleration b. velocity c. displacement d. differential
 5. The direction and speed of an object is described by its __________.
 a. velocity b. average speed c. average displacement d. displacement
 6. Changes in which of the following of Earth's layers cause earthquakes?
 a. stratosphere b. lithosphere c. core d. magnetosphere
 7. Forces that cancel each other are called __________ forces.
 a. null b. inactivated c. neutral d. balanced
 8. If a runner maintains a constant speed of 12 km/h, how long will it take to complete a marathon race of 26.2 miles?
 a. 5.3 h b. 3.14 h c. 3.52 h d. 2.18 h
 9. Average speed is found by __________.
 a. multiplying the displacement by the total time spent b. multiplying total distance traveled by the total time c. dividing the displacement by the total time spent d. dividing total distance traveled by the total time
 10. The __________ is the combination of all the forces acting on an object.
 a. direction of motion b. net force c. force pair d. inertia
 11. __________ is the distance an object travels per unit of time.
 a. Speed b. Velocity c. Displacement d. Acceleration
 12. The distance between an object and a reference point is the object's __________.
 a. displacement b. position c. velocity d. neutral point
 13. __________ measures an object's tendency to resist changing its motion.
 a. Inertia b. Mass c. Acceleration d. Gravity
 14. At 8:00 AM you leave home and walk 0.5 km to a friend's house. At 11:30 AM you return home, then travel by car to the mall, which is 10 km away, and arrive at 11:45 AM. What is the total distance traveled?
 a. 10 km b. 11 km c. 10.5 km d. 2.8 km/h
 15. The SI unit of distance is the __________.
 a. meter b. liter c. mile d. gram
 16. __________ is the change in velocity divided by the time needed for the change to occur.
 a. Average velocity b. Acceleration c. Speed d. Displacement
 17. If a student leaves home at 7:30 AM to walk to his school 2 km away, stops at a neighbor's house for 15 min, then arrives at school at 8:00 AM, what is the student's average speed for the trip to school?
 a. 4 km/h b. 2 km/h c. 2.67 km/h d. 8 km/h
 18. Newton's first law of motion states that __________.
 a. acceleration is calculated by dividing the force exerted on an object by the mass of the object b. an object will remain at rest or keep moving unless a force acts on it c. when a force is applied on an object, there is an equal force applied by the object in the opposite direction d. when a force acts on an object, its acceleration is in the same direction as the force
 19. To calculate the distance traveled continuously in a straight line, __________.
 a. subtract the time needed to travel the distance by the total distance traveled b. subtract final position from starting position c. divide the distance traveled by the time needed to travel the distance d. divide the change in velocity by the time over which the change occurs
 20. __________ is the speed of an object at any instant of time.
 a. Velocity b. Acceleration c. Instantaneous speed d. Average speed