WorksheetsKinematics in One Dimension (Concept Test)
Total questions: 25
Worksheet time: 23mins
2.1 Walking the dog
You and your dog go for a walk to the park. On the way, your dog takes many side trips to chase squirrels or examine fire hydrants. When you arrive at the park, do you and your dog have the same displacement?
Yes
No
2.2 Displacement
Does the displacement of an object depend on the specific location of the origin of the coordinate system?
yes
no
it depends on the coordinate system
2.3 Position and Speed
If the position of a car is zero, does its speed have to be zero?
yes
no
it depends on the position
2.4 Odometer
Does the odometer in a car measure distance or displacement?
distance
displacement
both
2.5 Speedometer
Does the speedometer in a car measure velocity or speed?
velocity
speed
both
neither
2.6a Cruising Along I
You drive for 30 minutes at 30 mi/hr and then for another 30 minutes at 50 mi/hr. What is your average speed for the whole trip?
2.6b Cruising Along II
You drive 4 miles at 30 mi/hr and then another 4 miles at 50 mi/hr. What is your average speed for the whole 8-mile trip?
2.7 Velocity in One Dimension
If the average velocity is non-zero over some time interval, does this mean that the instantaneous velocity is never zero during the same interval?
2.8a Acceleration I
If the velocity of a car is non-zero (v ¬π 0), can the acceleration of the car be zero?
2.8b Acceleration II
When throwing a ball straight up, which of the following is true about its velocity v and its acceleration a at the highest point in its path?
2.9a Free Fall I
You throw a ball straight up into the air. After it leaves your hand, at what point in its flight does it have the maximum value of acceleration?
2.9b Free Fall II
Alice and Bill are at the top of a building. Alice throws her ball downward. Bill simply drops his ball. Which ball has the greater acceleration just after release?
2.10a Up in the Air I
You throw a ball upward with an initial speed of 10 m/s. Assuming that there is no air resistance, what is its speed when it returns to you?
more than 10 m/s
10 m/s
less than 10 m/s
zero
need more information
2.10b Up in the Air II
Alice and Bill are at the top of a cliff of height H. Both throw a ball with initial speed v0, Alice straight down and Bill straight up. The speeds of the balls when they hit the ground are vA and vB. If there is no air resistance, which is true?
vA < vB
vA = vB
vA > vB
impossible to tell
2.11 Two Balls in the Air
A ball is thrown straight upward with some initial speed. When it reaches the top of its flight (at a height h), a second ball is thrown straight upward with the same initial speed. Where will the balls cross paths?
at height h
above height h/2
at height h/2
below height h/2 but above 0
at height 0
2.12a Throwing Rocks I
You drop a rock off a bridge. When the rock has fallen 4 m, you drop a second rock. As the two rocks continue to fall, what happens to their separation?
the separation increases as they fall
the separation stays constant at 4 m
the separation decreases as they fall
it is impossible to answer without more_x000B_ information
2.12b Throwing Rocks II
You drop a rock off a bridge. When the rock has fallen 4 m, you drop a second rock. As the two rocks continue to fall, what happens to their velocities?
both increase at the same rate
the velocity of the first rock increases faster than the velocity of the second
the velocity of the second rock increases faster than the velocity of the first
both velocities stay constant
2.13a Graphing Velocity I
The graph of position versus time for a car is given below. What can you say about the velocity of the car over time?
it speeds up all the time
it slows down all the time
it moves at constant velocity
sometimes it speeds up and sometimes it slows down
not really sure
2.13b Graphing Velocity II
The graph of position versus time for a car is given below. What can you say about the velocity of the car over time?
it speeds up all the time
it slows down all the time
it moves at constant velocity
sometimes it speeds up and_x000B_sometimes it slows down
not really sure
2.14a v versus t graphs I
Consider the line labeled A in the v versus t plot. How does the speed change with time for line A?
decreases
increases
stays constant
increases, then decreases
decreases, then increases
2.14b v versus t graphs II
Consider the line labeled B in the v versus t plot. How does the speed change with time for line B?
decreases
increases
stays constant
increases, then decreases
decreases, then increases
2.15a Rubber Balls I
You drop a rubber ball. Right after it leaves your hand and before it hits the floor, which of the above plots represents the v vs. t graph for this motion? (Assume your y-axis is pointing up.)
graph a)
graph b)
graph c)
graph d)
2.15b Rubber Balls II
You toss a ball straight up in the air and catch it again. Right after it leaves your hand and before you catch it, which of the above plots represents the v vs. t graph for this motion? (Assume your y-axis is pointing up.)
graph a)
graph b)
graph c)
graph d)
2.15c Rubber Balls III
You drop a very bouncy rubber ball. It falls, and then it hits the floor and bounces right back up to you. Which of the following represents the v vs. t graph for this motion?
graph a)
graph b)
graph c)
graph d)
2.15d Rubber Balls IV
You drop a very bouncy rubber ball. It falls, and then it hits the floor and bounces right back up to you. Which of the following represents the v vs. t graph for this motion?
graph a)
graph b)
graph c)
graph d)
