Definitions
What is velocity?
Speed + Direction
Ex. A car traveled 25mph north
Give an example of 2 objects having the same velocity
A car traveling 50mph north, A biker traveling 10mps east, etc.
If an object is stationary, what is it doing?
Stopped.
What is the formula to calculate average speed?
Average Speed = Total Distance / Total Time
What is speed?
How fast something travels.
Ex. The truck drove 40 mph
There are two cars driving down the street.
There are going the same speed, but opposite directions. Which of the following statements is true regarding the speed and the velocity of the two cars?
A) The cars have the same speed and the same velocity
B) The cars have the same velocity, but different speed
C) The cars have the same speed, but different velocity
D) The cars have different speeds and different velocities
C) The cars have the same speed, but different velocity
If a line on a graph is horizontal, what does that mean?
It's not in motion.
Which object has the greatest average speed?
A) Car traveling 70km in 2 hours
B) Bus traveling 80km in 1.5 hours
C) Motorcycle traveling 90km in 1.2 hours
D) Train traveling 160km in 1
D) Train traveling 160km in 1
What is distance?
How far something travels
A group of students wanted to determine the average speed for a toy car. They measured the distance and time of each trial for three times. Below are the calculations.
Trial 1: Time - 5 sec // Distance Traveled - 45 m
Trial 2: Time - 15 sec // Distance Traveled - 67 m
Trial 3: Time - 25 sec // Distance Traveled - 80 m
What is the average speed of the toy car over all three trials?
A) 4 m/s
B) 4.5 m/s
C) 4.3 m/s
D) 5.88 m/s
C) 4.3 m/s
A fox travels 159 km in 1.8 hours. What is the average speed of the train to the nearest hundredth?
88.33 km
A cross country runner completes a 200 meter race in 37 seconds. What is the average speed of the runner?
A) 5 m/s
B) 0.185 m/s
C) 5.4 m/s
D) 180 m/s
C) 5.4 m/s
List 3 examples of units for distance
meters, kilometers, miles, etc
A Nascar travels around an oval shaped racetrack at a constant speed of 200 m/s. At Point A the Nascar is driving straight. At Point B, the Nascar begins to turn.
Which statement correctly describes what happens to a race car's velocity as it travels from Point A to Point B?
A) The velocity changes because of the distance and the displacement.
B) The velocity changes because the Nascar changes its direction.
C) The velocity is constant because of the distance and the displacement are the same.
D) The velocity is constant because the speed is constant.
B) The velocity changes because the Nascar changes its direction.
A runner completes a 500 meter race in 73 seconds. What is the average speed of the runner?
A) 6 m/s
B) 573 m/s
C) 0.146 m/s
D) 6.8 m/s
D) 6.8 m/s
A train travels 110 km in 1.5 hours. What is the average speed of the train to the nearest hundredth?
73.33 km
Why do we use distance-time graphs?
To show an objects motion
Which pair of objects have the same velocity?
A) A basketball rolling west at 5km and a different ball rolling west at 10km.
B) A cat running east at 6km and a fox running east 6km.
C) A truck sitting in no motion and a honda rolling north at 2km.
D) A plane traveling south at 300km and a plane traveling east at 300km.
B) A cat running east at 6km and a fox running east 6km.
A group of students wanted to determine the average speed for a toy car. They measured the distance and time of each trial for three times. Below are the calculations.
Trial 1: Time - 15 sec // Distance Traveled - 60 m
Trial 2: Time - 25 sec // Distance Traveled - 88 m
Trial 3: Time - 35 sec // Distance Traveled - 100 m
What is the average speed of the toy car over all three trials?
A) 3 m/s
B) 5.5 m/s
C) 3.3 m/s
D) 6.87 m/s
C) 3.3 m/s
Which object has the greatest average speed?
A) A rocket traveling 80km in 4 hours
B) A car traveling 75km in 3 hours
C) A cruise traveling 150km in 5 hours
D) A train traveling 55km in 1 hour
D) A train traveling 55km in 1 hour