1. The displacement is a. the position b. the change in the position c. the chan
ID: 1792602 • Letter: 1
Question
1. The displacement is a. the position b. the change in the position c. the change in the position divided by the time it takes to change d. the total distance traveled divided by the time it takes to travel the distance e. the change in the velocity divided by the time it takes to change 2. The average velocity is a. the position b. the change in the position c the change in the position divided by the time it takes to change d. the total distance traveled divided by the time it takes to travel the distance e. the change in the velocity divided by the time it takes to change 3. The average speed is a. the position b. the change in the position c. the change in the position divided by the time it takes to change d. the total distance traveled divided by the time it takes to travel the distance e. the change in the velocity divided by the time it takes to change 4. The average acceleration is a. the position b. the change in the position c. the change in the position divided by the time it takes to change d. the total distance traveled divided by the time it takes to travel the distance e. the change in the velocity divided by the time it takes to change 5. In free fall, all bodies fall with the same a. time b. speed c. velocity d. acceleration e. force 6. Which of the following is a unit of acceleration. a. mm/year b. mile/hour/sec c. mile/minute d. kg/s e. m/sExplanation / Answer
1] Displacement is the change of the position of an object. It is a vector quantity (unlike distance).
2] Average velocity is the change in the position divided by the time it takes to change. It is a vector quantity (unlike average speed).
3] Average speed is the total distance traveled divided by the time it takes to travel the distance.
4] Average acceleration is the change in the velocity divided by the time it takes to change to change.
5] In free fall, all bodies fall with the same acceleration which is the acceleration due to gravity (g = 9.8 m/s2) which is same irrespective of the mass of the object.
6] Acceleration is the rate of change of velocity with time and should thus have unit: mile/hour/sec.
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