Unit 2 Review
Name: _______________________________________________________Period: _____ Date: _____________________
1. Manipulate the equation
for
.
2. Manipulate the equation
for
.
3. Manipulate the equation
for
.
4. Manipulate the equation
for .
5. A turtle is walking toward a tasty carrot which is 12.0 m to the left of the tree. If his average velocity was
1.30 x 10-2 m/s to the left and it took him 692 s to get to the carrot, where did he start in reference to the tree?
6. Jordan is 34.3 m to the right of you and is running away from you at a constant velocity of 5.87 m/s. How far
away from you is Jordan after 7.32 s?
7. Laura is skydiving when at a certain altitude she opens her parachute and drifts toward the ground with a
constant velocity of 6.50 m/s, straight down. What is Laura’s displacement if it takes her 34.0 s to reach the
ground?
8. The peregrine falcon is the fastest of flying birds (and, as a matter of fact, is the fastest living creature). A falcon
can fly 1730 m downward in 25 s. What is the average velocity of a peregrine falcon?
9. The fastest fish, the sailfish, can swim 33.3 m/s. Suppose you have a friend who lives on an island 16000 m away
from the shore. If you send a message using a sailfish as a messenger, how long will it take for the message to
reach your friend?
10. You notice that a bull is chasing you with a constant velocity of 4.52 m/s to the right when it is 145 m behind
you. You begin to run with a velocity of 3.50 m/s to the right.
a. How far has the bull traveled after 10 seconds?
b. How far have you traveled after 10 seconds?
c. How close is the bull to you after 10 seconds?
11. A cheetah is known to be the fastest mammal on Earth, at least for short runs. Cheetahs have been observed
running a distance of 5.50 x 102 m with an average speed of 1.00 x 102 km/h.
a. How long would it take a cheetah to cover this distance at this speed?
b. Suppose the average speed of the cheetah were just 85.0 km/h. What distance would the cheetah cover
during the same time interval calculated in (a)?
12. A pronghorn antelope has been observed to run with a top speed of 26.9 m/s. Suppose an antelope runs 1500 m
to the right with an average velocity of 23.6 m/s, and then runs 800 m to the right with an average velocity of
18.6 m/s.
a. How long will it take the antelope to run the entire 2300 m?
b. What is the antelope’s average velocity during this time?
Answer the following questions based on the position vs. time graph below.
1. What is the average velocity between 24 and 48 seconds?
2. What is the average speed between 9 and 39 seconds?
3. What is the distance between 33 and 48 seconds?
4. What is the displacement between 0 and 30 seconds?
5. What is the instantaneous velocity at 15 seconds?
6. What is the average velocity between 0 and 42 seconds?
7. What is the average speed between 21 and 48 seconds?
8. What is the distance between 12 and 39 seconds?
9. What is the displacement between 12 and 39 seconds?
10. What is the instantaneous velocity at 41 seconds?
Convert the position vs. time graphs into velocity vs. time graphs.
Convert the velocity vs. time graphs into position vs. time graphs and use the velocity vs. time graphs to determine the
displacement of the object.