Physical Science Motion
What is a jogger's average speed if she jogs 4 kilometers in 32 minutes, then 2 kilometers in 22 minutes, and finally 1 kilometer in 16 minutes?
0.1 kilometers per minute
What is the acceleration of a car traveling at 10 meters per second that takes 20 seconds to stop?
0.5 meters per second squared
What is Monique's total displacement if she walks 2 blocks east to her friend Carla's house, then 4 blocks west (past her own house) to her friend Kate's house?
2 blocks west
What is the acceleration of a race car that goes from a pace car speed of 400000 kilometers per second to full speed of 900000 kilometers per second in 10 seconds?
50000 kilometers per second squared
What is Nikki's total displacement if he drives 4 miles east from his house to pick up his friend Dave, and then drive 2 more miles east to school?
6 miles
What is a train's average speed if it travels 190 kilometers in 3 hours, and then 120 kilometers in 2 hours?
62 kilometers per hour
What is the speed of a train car if its distance/time graph indicates that it traveled 200 meters in 25 seconds?
8 meters per second
What is a frame of reference?
A system of objects that are not moving with respect to one another.
Acceleration
Acceleration is described as changes in speed, changes in direction, or both.
What is displacement?
How far and in which direction an object moved from where it started and where it ended
What is the motion of a car if the line on the distance/time graph is horizontal?
It is not moving
Who is the faster runner if Bob runs 4 miles in 1 hour, and Mo runs 2 miles in 20 minutes?
Mo
What is instantaneous speed?
The rate at which an object is moving at a given time.
What is acceleration?
The rate at which velocity changes.
speed
The ratio of the distance an object moves to the amount of time needed to travel the distance.
What is velocity?
The speed at which an object is traveling and the direction it is traveling.
What is the motion of a car if the line on the distance/time graph is a straight line going up?
moving at constant speed
What is the motion of a car if the line on a distance/time graph is a straight line going down?
moving at constant speed
What is the motion of a car if the line on a velocity/time graph is a straight line down?
slowing down
What is motion of a car if the line on a distance/time graph is curving upward?
speeding up
What is the formula for calculating acceleration.
the change in velocity divided by the total time
instantaneous speed
the speed you are traveling at a specific time, can measured by your car's speedometer.
What is Johnny's total displacement if he walks 2 miles to the school, and then takes the short cut back home that is only 1 mile?
zero
What is the acceleration of a bus moving at a constant speed of 50 miles per hour?
zero
