The Basics
Distance and Displacement
Speed and Velocity
Acceleration
Kinematic Equations
100
What is precision?
How close measured values are to one another.
100
Is displacement a scalar or vector quantity?
Vector
100
Is speed a scalar or vector quantity?
Scalar
100
If a cheetah is moving rightwards, but slowing down. What direction is the cheetah's acceleration?
Leftwards
100
vi = 20m/s, vf = 5m/s, t = 20s
Find Acceleration and displacement
Acceleration: -0.75 m/s2
Displacement: 250m
200
When the results match the expected results and each data point is close in value. Is my precision good or bad? Is my accuracy good or bad?
Good accuracy, and good precision.
200
Is distance a scalar or vector quantity?
Scalar
200
Is Velocity a scalar or vector quantity?
Vector
200
If a lion is moving rightward and speeding up, what is the direction of acceleration for the lion?
Rightwards
200
A cheetah can accelerate from rest to a speed of 27.0 m/s in 9.00 s. What is its acceleration?
-3 m/s2
300
When the results are not close to the expected results, but each data point is close in value. Is my precision good or bad? Is my accuracy good or bad?
Good precision, bad accuracy.
300
Distance requires magnitude only. What does displacement require?
Magnitude and direction.
300
A car travels 30 meters in 12 seconds. What is the cars speed in m/s?
2.5 m/s
300
A plane Accelerates from rest in the positive direction. It reaches a max speed of 67 m/s in 30 seconds. What is the value of acceleration?
2.23 m/s2
300
A toy plane starting at rest at one end of a "runway" undergoes a uniform acceleration of 6.7 m/s2 for 19 s before takeoff. What is its final speed at takeoff?
127m/s
400
How many significant figure is in 0.00210? Write the number in scientific notation.
Sig figs: 3
&
Scientific notation: 2.10 x 103
400
I walk the following distances:
1. walk 2m south
2. walk 4m east
3. walk 2m north
4. walk 4m west
What is my displacement?
0m
400
A gun shoots a bullet at a target. The bullet leaves the muzzle at 200m/s and travels a distance of 150m. What time does it take the bullet to reach the target?
0.75s
400
Mr. Goebel's Imaginary Camaro SS can accelerate from 30 m/s to 50 m/s in 15 seconds. Assume Mr. Goebel's Camaro is moving in the positive direction. What is the value of acceleration?
1.33 m/s2
400
An automobile with an initial speed of 7.30 m/s accelerates uniformly at the rate of +4.00 m/s2 . Find the displacement after 7.45 seconds.
165m
500
Subtract 0.0021 from 0.00301, express answer in scientific notation with the correct number of significant figures.
9.1 x 10-4
500
145yds
500
Michael and Michaels grandmother (MG) are running on a circular track. The track is 300 meters long. Michael finishes a whole 60 seconds before grandma reaches her stopping point 15 meters before the finish line. Who has the greatest speed? Who has the greatest velocity?
Michael has the greatest speed but GM has the greatest velocity.
500
It takes 3 seconds for a car to come to a complete stop while going 15 m/s in the positive direction. Assuming acceleration is uniform, what is the value of acceleration?
-5 m/s2
500
A girl drops a pebble from a high cliff into a lake far below. She sees the splash of the pebble hitting the water 2.00 s later. What is the velocity of the pebble going when it hits the water? What is the height of the cliff?
19.6m
-19.6m/s