Vocabulary
A point against which direction is measured.
What is a reference point?
The ratio of the distance an object moves to the amount of time needed to travel the distance.
What is speed?
The SI unit of speed is measured in this.
What is meters per second?
What is the velocity of a bicycle (in m/s) if it travels 3 km west in 4.3 min?
What is 11.63 m/s?
A car going 60 mi/hr accelerates to pass a truck. 3 seconds later, the car is going 80 mi/hr. Calculate the acceleration of the car.
What is 25,000 mi/hr?
What is someone measuring when they get 14m south?
What is displacement?
What is the acceleration of an object that moves with a constant velocity?
What is zero?
The direction an object moves and the ratio of the distance to the amount of time needed to travel the distance.
What is velocity?
The ratio of the total distance traveled to the total time of the trip
What is Average Speed?
What is the relative speed of two objects going in the same direction?
relative speed = s1- s2
A trip to Destin, Fl takes 10 hours. The distance is 814 km. Calculate the average speed.
A skier reaches the bottom of a slope with a velocity of 10 m/s south. If the skier comes to a complete stop in 4 seconds, what was their acceleration?
What is 2.5 m/s north?
On a distance-time graph for acceleration, a flat horizontal line shows this.
What is constant speed?
A rabbit is running east at 5.4 m/s and an eagle is pursuing at 4.4m/s. What is the relative velocity of predator and prey?
What is 1.0 m/s?
5.4m/s - 4.4m/s=1.0m/s
A physical measurement that contains both magnitude (number) and directional information.
What is vector quantity?
A physical measurement that contains only magnitude (number) and does not contain directional information.
What is scalar quantity?
the equation for speed
What is distance/time or v=d/t
A car traveled 84 km in 1 hour, 92 km in the next hour and then 122 km in the next 2 hours before arriving at its destination. What was the car’s average speed?
What is 74.5 km/hr?
A car goes from 0 to 70 mi/hr north in 7.3 seconds. What is the car’s acceleration?
What is 35,000 mi/hr south?
The slope of a line on a distance-time graph.
What is speed?
A car traveled 80 km in 1 hr, 90 km the next hour and 110 km in the next 2 hours before arriving to their destination. This was the car's average speed.
What is 70 km/h?
80km + 90km + 110km=280km
1 hour +1 hour + 2 hours = 4 hours
280 divided by 4 = 70 km/h
The distance an object travels plus the direction from the starting point.
What is Displacement?
The length of a path between two points.
Acceleration equation
a = vf-vi / t
How many miles per hour does a car travel if it makes a 15 mile trip in 18 minutes
What is 50 miles/hr?
A ball rolls down a ramp for 12 seconds. If the initial velocity of the ball was 0.5 m/s and the final velocity was 8 m/s. What was the acceleration of the ball?
What is .0625 m/s?
What is someone measuring when they have 13.2m/s east?
What is velocity?
How many miles per hour does a car travel if it makes a 40-mile trip in 30 minutes?
What is 80 mi/h
30 mins = .5h
40mi divided by .5 hr = 80 mi/h
The time rate of change of an object’s velocity.
What is acceleration?
The rate at which an object is moving at any given time.
What is Instantaneous Speed?
What is the relative speed of two objects going in opposite directions?
relative speed = s1 + s2
How many seconds will it take for a satellite to travel 480 km at a rate of 25 m/s?
What is 19,200 seconds?
Two cars are traveling down a road. The first car is traveling north at 45 mi/hr, and the second is a few hundred yards behind, traveling north at 45 mi/hr. What is their relative velocity?
What is 0 mi/hr?
What is someone measuring when they get 10m?
What is distance?
What is the velocity of a bicycle in m/s if it travels 1km west in 4 mins?
What is 4.17 m/s west?
4min = 240 seconds
1 km= 1000 m
1000m divided by 240 = 4.17 m/s west