Motion
Two things you must know to calculate speed.
What is the total distance over the total time?
SI unit of force.
What is Newtons?
Why does friction occur?
What is a force that opposes motion between two surfaces caused by microscopic hills and valleys on a surface that come in contact with one another?
Always get ______ ________ before doing anything in a lab.
Teacher and Permission
What is gravity?
The force of attraction between objects.
Difference between speed and velocity.
What is Velocity is direction
What is Force?
What is a push or pull?
Describe two ways friction can be increased.
1. Treaded Tires
2. Cleats
Read all ________ carefully before doing a lab
Procedures
What is the force of gravity related to?
2. Distance
More helpful to know a tornado's velocity rather than its speed.
What is Velocity tells the direction?
J'siah and Addi were helping Aubrielle move a couch. J'siah pushed the couch with 25 N east and Addi pushed with 15 N east. J'siah's cousin Audriena pushed back at 10 N west. Calculate the net force.
What is 25N+15N=40
40N-10N=30N
Name three ways friction can be reduced.
1. Applying Lubricants
2. Applying oil
3. Polishing surface
Memorize _______ symbols
Safety
What is the Law of Universal Gravitation?
The greater the mass more the gravity
The greater the distance less the gravity
Calculate the expression.
Emily can skateboard 120 meters in 8 seconds, what is the average speed?
What is 15m/s
What may happen when an object receives unbalanced forces?
It may move.
What are the harmful effects of friction?
Wears down gears in cars.
Causes scraped knees.
Makes it difficult to move an object.
_______ rather than smell
WAFT
What is the SI unit for mass?
What is grams?
Calculate the expression.
A kangaroo hops 60 meters to the east in 5 seconds, what is the velocity?
What is 12m/s east?
Describe three different ways you can accelerate when riding your bike.
1. Speeding Up
2. Slowing Down
3. Change Direction
P.S. You don't have to say all three.
What are the helpful effects of friction?
Brakes on a car, bike, train, etc.
Objects stay put.
Making a surface rough.
Pay attention be ________
Focused
Describe two differences between weight and mass.
1. Weight= force of gravity
2. Mass how much matter an object has.