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Forces & Motion...
Hard Questions
measure
100
The force that prevents or slows motion between objects that are touching is __________
friction
100
A push or a pull
What is force
100
Melissa walked 3 miles in one hour. With this information, what can yo compute?
What is speed
100
all objects in the universe attract each other through gravitational force
what is the law Of universal gravitation?
100
Which surface would probably offer the least friction if you were to slide a box across it? a) brick b0 carpet c) ice d) wood
What is "c" ice
200
a push or pull
what is a force?
200
Forces that cancel out one another
What are balanced forces
200
unbalanced!
to produce change in motion, a force must be?
200
my answer using a lubricant
how can friction be reduced (one way)
200
kg
what is the unit used to measure mass
300
A force that acts between any two masses in the universe and pulls them toward each other
What is gravitational force
300
A measure of the gravitational force of or on an object
What is weight
300
Which unit is used to measure gravity? a) meters b) meters per second c) newtons d) milligrams
What is "c" newtons
300
by making surfaces rougher or increasing the force pushing the surfaces together
How can friction be increased
300
Newtons
What unit is used to measure weight
400
The direction AND speed of a moving object
What is velocity
400
The tendency of matter to resist a change in motion
What is inertia
400
springscale
What object is used to measure weight?
400
Which 2 factors keep a planet in orbit around the sun? a) gravitation and the planet's inertia b) gravitation and the planet's weight c) gravity and the planet's size d) gravity and the sun's inertia
What is "a" gravitation and the planet's inertia
400
Newtons
(review) what is weight measured in?
500
rolling and kinetic friction
what are two types of friction?
500
distance divides by time!
How do you calculate speed
500
balance scale
what object is used to measure mass
500
a force of attraction between objects due to their mases
What is Gravity?
500
kilograms (kg)
(review) what unit is used to measure mass?