Speed And Forces Of Motion Question Preview (ID: 39959)
Test Review For Chpt 5.
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Which of the following is a helpful use of frictional force?
a) add a lubricant
b) using your eraser to remove an incorrect answer
c) wearing a whole in you sock
d) sliding on the ice
If Lindsey travels 300meters North and then 200meters South. What is her displacement
a) zero meters
b) 500 meters south
c) 500 meters north
d) 100meters North
What does a straight diagonal line mean on an acceleration graph?
a) constant speed
b) constant acceleration
c) constant velocity
d) none of these
What are three ways to reduce friction?
a) use a lubricant, smoother surface, use wheels
b) increase the roughness of the surface, add wheels, and reduce the weight of the object
c) use a deeper tread, add wheels , and reduce the weight of the object
d)
Which of the follwing results in a decrease in friciton?
a) putting salt on an icy sidewalk
b) using rougher sandpaper
c) adding ridges to a bottle cap
d) spraying a pan with oil before cooking
Which of the following identifies the 2 types of kinetic friction?
a) static and kinetic
b) static and sliding
c) kinetic and sliding
d) sliding and rolling
Distance is the measure of the entire path an object has traveled from begining to end.
a) True
b) False
c)
d)
The force that opposes motion is called
a) gravity
b) weight
c) friction
d) speed
The sum of all the forces acting on an object is called
a) balanced
b) unbalanced
c) net force
d) zero
Unbalanced forces always result in
a) friction
b) a change in the motin of an object
c) no change in the motion of an object
d) a net force of zero
Which of the following is a way to reduce friction?
a) use a lubricant
b) make the surface rougher
c) increase the force holding the items together
d) none of these
If 50 newtons of applied force are pushing to the right and 35 newtons of fricitonal force is resisting the motion. What is the netforce?
a) zero
b) 15 N to the right
c) 15 N to the left
d) 85 N to the right
On an acceleration graph a straight horizontal line means
a) constant speed
b) constant acceleration
c) deceleration
d) none of these
On a time and distance graph a horizontal line means....
a) the object is traveling at a constant speed
b) the object is accelerating
c) the object is stationary
d) the object is decelerating
What is the factor that makes the difference between speed and velocity?
a) time
b) direction
c) distance
d) they are the same
What are the two components of speed?
a) distance and direction
b) distance and time
c) direction and speed
d) changes in direction
The difference between speed and velocity is
a) distance
b) time
c) direction
d) speed
An object's change in velocity over time is
a) speed
b) acceleration
c) friction
d) reference point
What is the speed of an object that travels 50cm in 15seconds?
a) 1.7cm/s
b) 1.7cm/s/s
c) .3cm/s
d) 450cm/s
Which type of motion does not result in a change in motion?
a) speed
b) balanced forces
c) unbalanced forces
d) net force
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