Physics 2012
Name: _________________
UNIT 2 KINEMATICS REVIEW
Date: _______ Period:_____
1) When you look at the speedometer in a moving car, you can see the car’s _____.
(A) instantaneous speed.
(B) average speed
(C) average acceleration
(D) instantaneous acceleration
(E) average distance traveled
(F) instantaneous position
2) A boat is traveling west with a constant velocity of 33 m/s. Which of the following statements is true?
(A) The boat has a positive acceleration.
(B) The boat has a negative acceleration.
(C) The boat has zero acceleration.
(D) The boat is not moving.
3) If a swimmer has to swim 5 laps of the pool (to the end and back), with one length of the pool being 50 meters,
what is the swimmer’s distance and displacement?
(A) 250m, 250 m
(B) 500m, 500m
(C) 500 m, 0m
(D) 500 m, 250m
4) A wallaby, travelling north, has a positive initial velocity and a negative acceleration. Which of the following
best describes the motion of the wallaby?
(A) The wallaby has a constant speed.
(B) The wallaby is speeding up.
(C) The wallaby is slowing down.
(D) The wallaby is travelling in a negative direction.
True or False:
5) The rate at which distance is covered is called speed.___________
6) Average speed is defined as the time it takes for a trip divided by the distance traveled. ___________
7) Velocity is different from speed in that velocity is speed in a given direction. ___________
8) The SI unit of velocity is the meter. ___________
9) The SI unit of acceleration is m/s. ___________
10) The rate at which velocity changes with time is called acceleration. ___________
11) When a car rounds a corner at constant speed, its acceleration is zero. ___________
12) Even though a car is slowing down, it is still accelerating. ___________
13) Complete the following Units Table
Name of Physical Quantity
Time
Acceleration
Speed
Velocity
Displacement
Distance
Symbol
SI Unit
Problems: Complete using the required GUESS method!
14) If the average speed of a cheetah is 21.7 m/s, how far can it run in 3.0 seconds?
Diagram: (Given + Unknowns)
Equation:
Substitute:
Solve:
15) Starting from rest, a car undergoes a constant acceleration of 6.0 m/s 2. How far will the car travel in the first
second of travel?
Diagram: (Given + Unknowns)
Equation:
Substitute:
Solve:
16) How far does a car travel with an acceleration of 4.0 m/s2 take to go from 10 m/s to 30 m/s?
Diagram: (Given + Unknowns)
Equation:
Substitute:
Solve:
17) A stone is dropped from a cliff with no initial velocity. The stone has a vertical acceleration of 9.8 m/s 2. After
it has fallen 128.6 m, what is the stone’s final velocity?
Diagram: (Given + Unknowns)
Equation:
Substitute:
Solve:
18) In the story of the tortoise and hare, a hare traveling 0.75 m/s accelerates uniformly for 3 second to pass
the tortoise. The hare travels 38.25 m during the 3 second interval that it was accelerating. What is the hare’s
speed at the end of the acceleration period?
Diagram: (Given + Unknowns)
Equation:
Substitute:
Solve:
19) What is the acceleration of a car that was traveling at 30 m/s and hit brakes to come to a stop in 1.7 s ?
Diagram: (Given + Unknowns)
Equation:
Substitute:
Solve:
20) From the position vs time graph (left), draw the proper translation of a velocity vs time and acceleration vs
time graph using the middle and right graphs.
Relationship of Velocity vs Time
10
Velocity
Position
8
6
4
2
0
0
0.5
1
1.5
2
Time
2.5
2
1.5
1
0.5
0
-0.5 0
-1
-1.5
-2
-2.5
1
2
3
Time
4
Relationship of Acceleration vs
Time
5
Acceleration
Relationship between Position
and Time
2.5
2
1.5
1
0.5
0
-0.5 0
-1
-1.5
-2
-2.5
1
LABEL SI UNITS ON ALL GRAPHS ON THIS AND THE FOLLOWING PAGE
21) Describe the acceleration in the following situations:
a. Acceleration from 0 to 4 sec:
velocity
8
b. Acceleration from 4 to 6 sec:
6
4
2
time
2
4
6
8
10
c. Acceleration from 6 to 10 sec:
2
3
Time
4
5
Use the following Position vs. Time graphs to answer the next six questions. The reference point is at 0 m.
Multiple graphs are possible answers to these questions. Graph choices can be used more than once.
Graph B
2
2
1.5
1.5
Position
Position
Graph A
1
0.5
0.5
0
0
0
0.5
1
1.5
0
2
0.5
Time
Graph C
Graph D
2
2
1.5
1.5
1
0.5
1.5
2
1.5
2
1
0.5
0
0
0
0.5
1
1.5
2
0
0.5
Time
22)
23)
24)
25)
26)
27)
1
Time
Position
Position
1
Which
Which
Which
Which
Which
Which
1
Time
of the following graph(s) shows motion with constant non-zero acceleration? ________________
of the following graph(s) shows motion towards the reference point? _____________________
of the following graph(s) shows motion with positive constant velocity? ___________________
of the following graph(s) shows motion where the object is speeding up? __________________
of the following graph(s) shows motion with no acceleration? ___________________
of the following graph(s) shows motion with a negative changing velocity? ___________________
28) Draw a velocity vs time and an acceleration vs time graph that would show a cat moving with constant velocity
in the positive direction.
Relationship Acceleration vs Time
2.5
2
1.5
1
0.5
0
-0.5 0
-1
-1.5
-2
-2.5
1
2
3
Time
4
5
Acceleration
Velocity
Relationship Velocity vs Time
2.5
2
1.5
1
0.5
0
-0.5 0
-1
-1.5
-2
-2.5
1
2
3
Time
4
5