Physics Midterm Review Question Preview (ID: 45119)


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What is the SI unit for velocity?
a) meter
b) meter * second
c) meter/second
d) second/meter

Identify the following quantities as scalar or vector, the mass of an object, the number of leaves on a tree, wind velocity
a) vector, scalar, scalar
b) scalar, scalar, vector
c) scalar, vector, scalar
d) vector, scalar, vector

The magnitude of the gravitational force acting on an object is
a) frictional force
b) weight
c) inertia
d) mass

If a nonzero net force is acting on an object, then the object is definitely
a) at rest
b) moving with a constant velocity
c) being accelerated
d) losing mass

Which of the following is the motion of objects moving in two dimensions under the influence of gravity?
a) horizontal velocity
b) directrix
c) vertical velocity
d) projectile motion

A child moving at constant velocity carries a 2 N ice-cream cone 1 m across a level surface. What is the net work done on the ice-cream cone?
a) 0 J
b) 0.5 J
c) 2 J
d) 20 J

The statement by Newton that for every action there is an equal but opposite reaction is which of his laws of motion?
a) first
b) second
c) third
d) fourth

Acceleration of defined as
a) a rate of displacemnt
b) the rate of change of displacement
c) the change in velocity
d) the rate of change of velocity

Which of the following is the cause of an acceleration?
a) speed
b) inertia
c) force
d) velocity

The length of a force vector represents the
a) cause of the force
b) direction of the force
c) magnitude of the force
d) type of force

Which of the following is an example of projectile motion?
a) a jet lifting off a runway
b) a thrown baseball
c) an aluminum can dropped straight down into the recycling bin
d) a space shuttle being launched

Why do physicisits use models?
a) to explain the complex features of simple phenomena
b) to describe all aspects of a phenomenon
c) to explain the basic features of complex phenomena
d) to describe all of reality

In which of the following sentences is work used in the everyday sense of the word?
a) Lifting a heavy bucket involves doing work on the bucket
b) the force of friction usually does negative work
c) Sam and Rachel worked hard pushing the car
d) Work is a physical quantity

A measure of the quantity of matter is
a) density
b) weight
c) force
d) mass

In the steps of the scientific method, what is the next step after formulating and objectively testing hypotheses?
a) interpreting results
b) stating conclusion
c) conducting experiments
d) making observations and collecting data

Which of the following situations represents a negative displacment? (Assume positive is measured upwards)
a) A cat stands on a tree limb
b) A cat jumps from the ground onto a limb
c) A cat jumps from a lower tree limb to a higher limb
d) A cat jumps from a tree limb to the ground

What is the path of a projectile in (in the absence of friction)?
a) wavy line
b) parabola
c) hyperbola
d) no predictable path

Which of the followin gline segments on a position vs. time graph is physically impossible?
a) horizontal line
b) straight line that slopes to the left
c) straight line sloping to the right
d) vertical line

Which would fall with greater acceleration in a vacuum- a leaf or a stone?
a) leaf
b) stone
c) same rate
d) cannot determine

A hammer drives a nail into a piece of wood. Identify an action-reaction pair
a) The nail exerts a force on the hammer; the hammer exets a force on the wood
b) The hammer exerts a force on the nail; the wood exerts a force on the nail
c) The hammer exerts a force on the nail; the nail exerts a force on the hammer
d) The hammer exerts a force on the nail; the hammer exerts a force on the wood

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