Physics Review
A car rounds a curve on a level road. The centripetal force on the car is provided by
friction between the tires and the road
The weight of an object is
greater at the poles than at the equator
A stone is thrown upward from a roof at the same time as another, identical stone, is dropped from the roof. The two stones
have the same acceleration when they reach the ground
Centripetal acceleration is always pointed
inward
A bullet is fired upward. As it rises,
its mass remains the same while its weight decreases
Gravity develops due to primarily
mass
Which of the following is not a vector quantity?
mass
Something that has only magnitude is called a
scalar
Using a laser to checkout at the store is
technology
When a boy pulls a cart, the force that causes him to move forward is
the force the ground exerts on his feet
A year is the time needed for...
the sun to drift completely around the sun
An object moving in a circle at a constant speed is accelerated
toward the center of the circle
The prefix micro stands for
1/1,000,000
A snail travels 45cm in 20min. Its average speed is (note convert min to hours)
135 cm/h
A bicycle travels 12km in 40 min. Its average speed (in km/hour) is
18
Relative to what she weighs on the earth, an astronaut visiting another planet
Any of the choices, depending on the planet
According to Aristotle, what element was below water?
Earth
When first proposed, a scientific idea is usually called a...
Hypothesis
A planet not visible to the naked eye is...
Neptune
Which would change mass substantially?
None of these
Who is largely responsible for the philosophy of idealism?
Plato
The object in the sky that apparently moves least in the course of times is...
Polaris
Your body most easily "feels" acceleration
True
Can someone take 4 steps and end up where they started?
Yes
The "scientific method" is
a continuing process
When an object is accelerated
a net force acts on it
Which statement about the pair of units is true
a yard is shorten than a m
Which of these best models Newton's first law
all of these
Newton's first law of motion implies
an object at rest will stay at rest unless something causes it to move
Which is not causing a force on a car?
cruise control
