Graphs
Motion
Acceleration
Forces
Energy
100
Identify each part as - acceleration, deceleration, or traveling at a constant velocity.
A - acceleration
B - constant velocity
C - deceleration
100
A coin rolls 5 meters left then turns and rolls 4 meters to the right.
What distance did the coin roll?
d = 9 m
100
A rollercoaster slows from 30 m/s to a stop in 10 seconds. How fast did the rollercoaster accelerate?
a = -3m/s/s
(Remember: a stop = 0 m/s)
100
An object is pushed with a force of 15 N to an acceleration of 5 m/s/s. What is the mass of the object?
m = 3kg
100
An object rolls and does not stop
Which of Newton's laws does this represent?
1st
200
What is the distance of the first 3 seconds?
d = 90 m
(Remember: Use the S = d/t formula.
t = 3 seconds, v = 30 m/s)
200
Stephen dashes to the store 720 meters away in 68 seconds. How fast did Stephen run?
10.59 m/s
200
Can energy be created?
No!
200
If the acceleration of an object increases (and the mass stays the same), what would happen to the force on the object?
The force would increase.
(Consider the formula F=ma, if a goes up, then F goes up)
200
What is the formula for momentum?
Mass x velocity
300
What is the speed of part A-B?
0.6 km/hr
300
On Friday, it took Kevin 2 hours to drive to the beach.
On Sunday, it took Kevin 1 hour to drive to the beach.
How did speed change?
It took Kevin less time to go to the same destination, therefore he was driving faster (more speed!).
300
A 5 kg chair is being pulled to the right with 10 N of force and being pulled to the left with 20 N of force. What is the acceleration of the chair?
(you might draw a free-body diagram)
2 m/s/s
300
What is the formula for work?
Mass x Distance
300
What is your homework tonight and tomorrow?
To study
400
What part(s) has a constant Speed?
What part(s) has a positive acceleration?
B
A and D
400
Kevin walked 3 miles to the store in 1.4 hours.
What is his velocity?
2.14 mi/hr to the store
400
A bike accelerates from rest to a speed of 12 m/s in 3 seconds. Determine the acceleration of the bike.
4 m/s/s
400
What is the formula for power?
Work/Time
400
This scientist gave us three important laws.
Newton
500
Spell the teachers name
Abramoff
500
A coin rolls 5 meters left then turns and rolls 4 meters to the right.
What displacement did the coin have at the end?
displacement = 1 m left
500
Can energy be destroyed?
No!
500
Joe runs to the mall in two minutes. Sarah takes five minutes. Who did more work (mass is the same).
Work is the same.
500
What are three ways to study?
Answers vary.