Distance Vs Displacement
Asha drives her car 45 kilometres north. She stops for lunch and then drives 15 kilometres east. What distance did she cover? What was her displacement?
Distance = 60
Displacement = 60
A ball rolls 8m in 2 sec. What is the ball’s speed?
4
A car’s velocity changes from 32 m/s to 96 m/s in an 8.0-s period. What is its acceleration?
8
how fast an object is moving, or the distance it travels in a certain amount of time.
It does not include direction.
Speed
Starting from rest, a diver reaches 12 m/s in 2.0 s.
What is the acceleration?
6
Anthony walks to the pizza place for lunch. He walks 1 km east, then 1 km south and then 1 km east again. What distance did he cover? What was his displacement?
Distance = 3
Displacement = 3
A mom pushes a stroller up and down the mall with an average speed of .6m/s. How far will she go in 30 min?
180
Rocket-powered sleds are used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 244 m/s in 1.80 s. What is its acceleration?
135.55
how far an object is from its starting point in a straight line, and it includes direction.
It compares the starting position to the ending position, not the whole path taken.
Displacement
A student walks 30 m east, then 40 m west.
What is the distance?
What is the displacement?
Distance = 70
Displacement = 10
Michelle walks 100m toward the west, then turns and walks back the way she came 20m. What is her distance? What is her displacement?
Distance = 120
Displacement = 80
A car averaged 20m/s on a road trip to a city 400km away. How long did the trip take?
20
A truck decreases its velocity from 18 m/s to 3 m/s in 4.0 s as it approaches a stoplight.
3.75
total length of the path an object travels.
Distance
A hiker moves 15 m north, then 15 m east, then 15 m south.
What is the total distance?
What is the displacement?
Distance = 45
Displacement = 15
Some hikers travel 2 km north, turn toward the west and travel 4km, turn toward the south and travel 6 km, then finally travel east for 4 km. What is their distance? What is their displacement?
Distance = 16
Displacement = -4
A hare (rabbit) can run 2.5 m/s. If he runs for 36 sec, how far did he run?
90
A roller coaster car moves from 10 m/s to 40 m/s in 6.0 s along the track.
What is its acceleration?
5
the rate at which an object’s velocity changes over time.
Acceleration
A car is traveling at 22 m/s for 30 seconds.
How far does the car travel?
660
Ray Runs 30 Feet North than 15 Feet South and 25 East. What is Rays Distance & Displacement ?
Distance = 70
Displacement = 40
A runner circles the track exactly 2 times for distance of 800m. It takes 4.0min. What is her average speed in m/s?
200
A train is moving at 15 m/s and speeds up to 30 m/s over 10 s.
What is the train’s acceleration?
1.5
the speed of an object in a specific direction.
Velocity
A train travels 900 m at a speed of 15 m/s.
How long does the trip take?
60