definitions
an object’s distance and direction from a reference point.
position
A car starts at a velocity of 15 m/s and increases to 20 m/s in 5 seconds
1 m/s^2
a measure of the distance an object travels per unit of time.
speed
You walked 2 miles in 1 hour
2 mph
Moving to the left or down is indicated by
a negative
the starting point you choose to describe the location, or position, of an object.
reference point
You are walking at a velocity of 5 m/s and begin running at a pace of 11 m/s in 2 seconds
3 m/s^2
the rate of change of position in which the same distance is travelled each second.
constant speed
A car is moving 120 miles in 5 hours
24 mph
moving to the right or up is indicated by
a positive
the difference between the initial position and the final position of an object.
displacement
Pablo is resting then moves to his food bowl at a velocity of 12 m/s in 2 s
6 m/s^2
a speed at a specific instant in time.
instantaneous speed
A horse runs 300 miles in 6 hours
50 mph
total amount of space traveled
distance
a change in velocity during a time interval divided by the time interval during which the velocity change
Average acceleration
The acceleration of a car is 4 m/s^2 with a starting velocity of 2 m/s and a final velocity of 14 m/s
3 s
the total distance travelled divided by the total time taken to travel that distance.
average speed
A shark swims at a speed of 31 mph in 2 hour
62 miles
displacement is 4 but you travelled in the -2 and +6 direction what is the distance
8
the speed and the direction of a moving object
velocity
A car starts at a velocity of 20 m/s and brakes to a velocity of 5 m/s in 3 s
-15 m/s^2
two factors that go into calculating speed
distance and time
A plane travels at a speed of 575 mph at a distance of 1,725 miles
3 hours
from an initial position you walked a distance of 6 miles going in the -3 and +3 direction. what is the displacement
0