Speed, Velocity, Acceleration
Graphing
Force & Newton's Laws
Work & Power
Units, Simple Machines, MA, & E
100
A cart starting from rest travels a distance of 3.6 meters in 1.8 seconds. The average speed of the cart is ____________?
2 m/s
100
What is the average speed for Student B?
0.5 m/s
100
A child on a skateboard experiences a 45 N force as shown and is travelling at 1.5 m/s/s . What is the mass of the student?
M = 30 Kg
100
How much work is needed to lift a box weighing 45 newton's 3.0 meters upward?
135 J
100
Using the scenario - label each unit with what it measures (D, T, F, W, P)
Fred Flintstones' Dino Digger moves a rock with 100,000 N a distance of 500 m in 15 sec. This generates 50,000,000 J and 3,333,333.33 W.
D = 500 m
T = 15 s
F = 100,000 N
W = 50,000,000 J
P = 3,333,333.33 W
200
A car travels at 84 km/hr for 7 hours. How far did it travel?
588 km
200
Which car is going the fastest? Which car is going the slowest?
Fastest = Car 1
Slowest = Car 4
The steeper the line, the faster the speed
200
What is the Net Force on the cart?
50 N -->
200
A heavy cart is pushed 5 meters on a level surface to produce 50 J. How much force was used to push the cart?
10 N
200
Ms. Coley has a new ISS escorter machine that can deliver students to ISS in little or no time. If she puts in 550 J of work and the machine generates 350 J of work delivering students, what is the efficiency of the machine?
E = 64 %
Unrounded = 63.6%
300
The average speed of a runner in a 400 meter race is 6.45 m/s. How long did it take the runner to complete the race?
62 s
300
Which bicyclist accelerated? decelerated?
Bicyclist S - Accelerated
Bicyclist T - Decelerated
300
What is the net force on the box?
<-- 7 N
300
How high was a rock raised if you applied 120 J and it weighed 10 Newtons?
D = 12 m
300
What is the mechanical advantage of this inclined plane?
8
400
What is the velocity of a car that traveled a total of 75 km north in 1.5 hours?
50 Km/hr north
400
What is occuring at each time segment?
0 - 4 s --> Constant Speed
4 - 8 s --> Stationary
8 - 10 s --> Accelerating
10 - 16 s --> Stationary
400
Identify what law each image depicts
3rd 1st 2nd
400
When a machine does 350 joules of work in 15 seconds. What is the power?
P = 23.33 W
400
What is the Mechanical Advantage of each pulley?
1 2 2
500
A car begins accelerating from 10 km/hr to 96 km/hr. What is the rate of acceleration if this takes 6 seconds to occur?
14.4 km/hr/s
500
What is occring at each line segment on the graph?
A - Constant Speed
B- Constant Speed
C - Stationary
D - Accelerating
E - Constant Speed
500
Summarize Newton's 3 Laws
1st -
2nd -
3rd -
1st - Objects in motion will stay in motion, and objects at rest will stay at rest, unless an unbalanced force acts on it.
2nd - The acceleration of an object depends on the mass of the object and the amount of force applied.
F = m x a
3rd - For every action there is an equal but opposite reaction.
500
An athlete weighs 250 Newtons, and climbed a ladder 15 meters tall. They produced 3,750 J of work and 540 W of power. How much time did it take to climb the ladder? t = W/P
t = 6.94 s
500
What is the Mechanical Advantage of each pulley?
3 3
