Speed & Velocity
It takes Sally 20 minutes to travel from her home to the mall, a trip of 30 miles. What is Sally's speed?
1.5 miles per minute
What are three conditions that can describe acceleration?
Speeding up, Slowing down, or turning.
If an object changes position in relation to another object, it is known to be in ___________.
Motion
Pete is driving down 7th street. He drives 150 meters in 18 seconds. Assuming he does not speed up or slow down, what is his speed in meters per second?
V = chg in Pos. / chg in Time
Speed + Direction
Velocity
At exactly 2:00 pm, Tom pulls out of his driveway. He reaches Walmart at 2:10 pm, 5 miles away from his house. What is his speed?
0.5 miles per minute
What is the typical unit for acceleration?
Meters per second squared.
The length of the path between two points.
Distance
A roller coaster’s velocity at the top of a hill is 10 m/s. Two seconds later it reaches the bottom of the hill with a velocity of 26 m/s. What was the acceleration of the coaster?
A = chg in Vel. / chg in Time
The total number of units traveled by an object.
Distance
Bobby drives his car at a speed of 60 miles per hour for 4 hours. How far has he driven?
240 miles.
Toon Train is traveling at the speed of 10 m/s at the top of a hill. Five seconds later is reaches the bottom of the hill and is moving at 30 m/s. What is the rate of acceleration of Toon Train?
4 meters per second squared.
_________ is represented on the x-axis and ____________ is represented on the y-axis to display motion in a graph.
Time; Distance (position)
A plane’s average speed between two cities is 600 km/hr. If the trip takes 2.5 hrs. how far does the plane fly?
What is 1500 kilometers?
Change in speed or direction.
Acceleration
What is the formula used to solve for Distance?
Distance = Velocity x Time
Pete the Penguin loves to sled down his favorite hill. If he hits a speed of 50 m/s after 5 seconds, what is his rate of acceleration? Hint: He starts at 0 m/s at the top of the hill.
10 meters per second squared
Slope of position time graph is
What is velocity?
How many significant figures are present: 0.00045
What is 2?
Mr. McPhillips goes home and comes back to school. The displacement is
0
Goldie Goldfish, a speed swimmer, loves to race around the park’s pond, which is 0.5 miles around. If she can swim 20 laps around the track in 2 hours, what is her average speed?
5 miles per hour
Mr. Conley's truck is going at 70m/s and slows to a stop in 5 seconds. What is the acceleration of Mr. Conley's truck?
-14 meters per second squared
The area under a velocity time graph
What is displacement?
A ball is dropped from a height of 100 m. What is speed just before it hits the ground. ignore air resistance
What is 44.3 m/s?
The speed at a specific moment in time.
Instantaneous Speed