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WorksheetsCh. 11 Using Forces
Total questions: 61
Worksheet time: 31mins
The location of an object:
Position
Motion
Frame of Reference
Direction
A change in an object's position over time:
Position
Motion
Frame of Reference
Direction
A group of object's from which you can measure a position or motion:
Position
Motion
Frame of Reference
Direction
North, South, East, or West
Position
Motion
Frame of Reference
Direction
Motion has which TWO things?
Distance
Direction
Rhythm
Waves
Which unit is NOT used to measure distance?
Miles
Seconds
Kilometers
Meters
How fast an object's position changes over time:
(Distance ÷ Time)
Speed
Velocity
Acceleration
Momentum
The speed AND direction of a moving object:
Speed
Velocity
Acceleration
Momentum
The change in velocity over time for an object:
(END SPEED - STARTING SPEED) ÷ TIME
Speed
Velocity
Acceleration
Momentum
Choose TWO options: An increase in speed is called _____________ and is represented by a __________ number.
Acceleration
Deceleration
Positive
Negative
Choose TWO options: A decrease in speed is called _____________ and is represented by a __________ number.
Acceleration
Deceleration
Positive
Negative
Which unit do we use to measure speed?
m/s/s
m/s
kg m/s
m
Which unit do we use to measure acceleration?
m/s/s
m/s
kg m/s
m
Which unit do we use to measure momentum?
m/s/s
m/s
kg m/s
m
"Mass in motion;" how easily an object can move other objects:
SPEED x MOMENTUM
Speed
Velocity
Acceleration
Momentum
SPEED = DISTANCE ÷ TIME
What is the speed of a car that travels 50 meters in 2 seconds?
25 m/s
25 m/s/s
100 m/s
48 m/s
VELOCITY = DISTANCE ÷ TIME with DIRECTION
What is the velocity of a skateboarder going east who traveled 10 meters in 5 seconds?
2 m/s East
2 m/s
2 m/s/s
50 m/s East
ACCELERATION = (END SPEED - STARTING SPEED) ÷ TIME
What is the acceleration of a horse that goes from 5 m/s to 20 m/s in 3 seconds?
5 m/s/s
5 m/s
6 2/3 m/s/s
8 1/3 ms/s
ACCELERATION = (END SPEED - STARTING SPEED) ÷ TIME
What is the deceleration of a train that goes from 60 m/s to 20 m/s in 5 seconds?
8 m/s/s
-8 m/s/s
-8 m/s
-12 m/s
MOMENTUM = (DISTANCE ÷ TIME) x MASS
What is the momentum of a 40 kg toddler that runs 8 meters in 4 seconds?
80 kg m/s
320 kg m/s
20 kg m/s
160 kg m/s
Any push or pull from one object to another:
Force
Gravity
Friction
Air Resistance
The force that attracts all matter together:
Force
Gravity
Friction
Air Resistance
A force that opposes (works against) the motion of one object moving past another:
Force
Gravity
Friction
Air Resistance
The force that slows down objects as they move through air or liquids:
Force
Gravity
Friction
Air Resistance
The force that pulls falling objects towards the ground:
Drag
Gravity
Friction
Air Resistance
The force that causes a feather to "float" instead of fall to the ground:
Gravity
Air Resistance
Friction
Pull
Choose TWO options: There will be more friction when...
The object is lighter
The object is heavier
The surface is smooth
The surface is rough
An object at rest tends to stay at rest, and an object in constant motion tends to stay in motion, unless acted upon by an unbalanced force.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
The unbalanced force on an object is equal to the mass of the object multiplied by its acceleration.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
All forces occur in pairs, and these two forces are equal in strength and opposite in direction.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Also known as the "Law of Inertia"
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
F = M x A
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
"For every action there is an equal and opposite reaction."
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
A satellite orbiting Earth.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
A roller skater goes faster when they push harder with their legs.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
As you push open a door, the door "pushes" back on you.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
A school bus is traveling at a constant speed of 15 mph in a straight line.
Balanced forces
Unbalanced forces
You are sitting on a chair with gravity pushing down on you and the chair pushing up on you.
Balanced forces
Unbalanced forces
You push a toy car across the carpet and after traveling for 3 seconds friction begins to slow the car down until it stops.
Balanced forces
Unbalanced forces
A ball crosses home plate at 65 mph, you swing and hit the ball into left field at 35 mph.
Balanced forces
Unbalanced forces
These forces always add up to zero (cancel each other out).
Balanced forces
Unbalanced forces
These forces cause a change in velocity (acceleration, deceleration, or change in direction).
Balanced forces
Unbalanced forces
The measurement of the energy used to perform a task:
Work
Energy
Potential Energy
Kinetic Energy
The ability to perform work or to change an object:
Work
Energy
Machines
Motion
Energy that is stored in the position or structure of an object:
Potential Energy
Kinetic Energy
The energy of a moving object:
Potential Energy
Kinetic Energy
The roller coaster at the top of the hill.
Potential Energy
Kinetic Energy
The roller coaster as it is speeding through a turn.
Potential Energy
Kinetic Energy
The rubber band when it is stretched.
Potential Energy
Kinetic Energy
The rubber band as it goes flying across the room.
Potential Energy
Kinetic Energy
The ball as it is held up high in the air.
Potential Energy
Kinetic Energy
The ball as it rolls across the field.
Potential Energy
Kinetic Energy
Work =
Force x Distance
Force + Distance
Force ÷ Distance
Force - Distance
WORK = FORCE x DISTANCE
What amount of work is done to move a 10 Newton box 5 meters?
50 joules
2 joules
15 joules
5 joules
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed, it only changes form.
Energy can be created, but never destroyed.
Energy should always be saved, so turn off your lights when you leave the house!
Energy cannot be wasted because it is infinite in supply.
A machine that takes one force and changes its direction, distance, or strength.
Simple Machine
Complex Machine
Washing Machine
Changing Machine
Which is NOT an example of a simple machine?
Lever
Pulley
Button
Wedge
Which is NOT an example of a simple machine?
Wheel and axle
Inclined plane
Screw
Sensor
The force you apply to a simple machine:
Effort
Output
Load
The force a simple machine supplies:
Effort
Output
Load
The object moved by the action of a simple machine:
Effort
Output
Load
