Speed, Velocity, and Acceleration
Forces
Newtonâs Laws
Motion and Energy
Random
100
What is a possible unit for speed?
(can write or say answer out loud)
m/s mph (mi/hr)
km/hr km/s
cm/s cm/hr
100
Fill in the blank:
The net force of balanced forces is always __________.
0 Newtons
100
What is the unit of force?
(Must give full word, not just the abbreviation)
Newtons (N)
100
Our school, HSC, is in between Hillcrest Elementary School and New Brunswick High School.
What are the two reference points?
Hillcrest Elementary School
New Brunswick High School
200
Sammy walks at a speed of 4 km/hr.
How much time does it take them to walk a distance of 20 km?
5 hours
200
1) Observe the following force diagram:
a) In what direction will the rope move?
b) What would be the net force?
c) Are the forces balanced or unbalanced?
a) Left
b) 50 Newtons
c) Unbalanced
200
Newton's First Law:
An object at rest will _________ ___ _____, and an object in motion will _________ ___ _____ unless acted upon by an unbalanced force.
Newton's First Law:
An object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by an unbalanced force.
200
Using what you know about acceleration and velocity, draw a simple graph that shows a car decelerating.
Any graph that is DECREASING at the same rate.
200
Scientific writing in science is called a CER.
What do each of the letters in CER stand for?
Claim
Evidence
Reasoning
300
A car going 150 km northwest in 10 seconds has a velocity of what?
(Must have correct answer and units)
15 km/s northwest
300
Mr. GonzĂĄlez and his wife are trying to move their new chair. Mr. GonzĂĄlez pushes the chair with a force of 30 N to the right, while Mrs. GonzĂĄlez pulls the chair in the same direction with a force of 25 N.
What is the net force of the chair and what direction would it travel in?
55 N to the right
300
*YOU GET 300 points!*
300
The difference between Kinetic energy and Potential energy is that Kinetic energy is the energy of an object in ___________ and Potential energy is the ___________ energy of any object.
motion
stored
300
1) Acceleration B
2) No motion (stopped) D
3) Constant speed A
4) Deceleration (negative acceleration) C
400
A plane is flying at a speed of 100 m/s and then increases its speed to 200 m/s in 10 seconds.
What is the planeâ˛s average acceleration?
10 m/s2 or 10 m/s/s
400
What is the net force for this problem and what direction would the box travel in?
â 4000 N
1354 N <-------đş-------> 2356 N
â 4000 N
1002 N moving in the right direction
400
Finish this sentence according to Newton's Third Law:
If a balloon floats up into the sky...
...it will eventually fall/come down.
400
Where is the point on the roller coaster with the:
~most potential energy?
~most kinetic energy?
~most potential energy = point A
~most kinetic energy = point B
500
Use the graph below of a race car traveling down a racetrack to answer the following question:
What is the average speed of the race car between 0 seconds and 2 seconds?
10 meters / 2 seconds =
5 meters/sec or 5 m/s
500
_________ - force arrow with both strength and direction
Vector
500
Newton's second law: F = m x a (F=ma)
The mass Mr. Green needed to lift on Friday was 1 box of chocolates. Today he needs to lift 10 boxes of chocolates.
If the mass of the boxes are increased (1 box to 10 boxes), what else will also need to be increased?
His force
500
When does a rubber band have the most potential energy?
When it is stretched out as far as it can go
500
What direction is the plane traveling in and with how much force?
East with 300 kN of force