Name: ____________________________________
Date: ______________________ Block: _____
Linear Motion Pre-test
Use the equations provided below to answer the following questions:
vavg = (v0 + v)/2
v = v0 + at
x = v0t + ½ at2
vavg = x/t
x = ½ (v0 + v)t
v2 = v02 + 2ax
aavg = v/t
1. Two birds are flying directly towards each other at the same speed. If the first bird is
flying at a velocity v, what is the velocity of the second bird?
a)
b)
c)
d)
-v
The same
2v
Can’t be determined
2. A driver would be able to set a track record if he is able to complete 200 laps of 2.5
miles each at the Indianapolis Motor Speedway in 2 hours. How would his velocity
and speed compare?
a)
b)
c)
d)
They are the same.
They are equal, but opposite from each other.
The speed would be greater than the velocity.
The velocity would be greater than the speed.
3. Oil drips at 0.5 second intervals from a car that has an oil leak. Which pattern best
represents the spacing of oil drops as the car accelerates uniformly from rest?
a)
c)
b)
d)
4. A couple of students at Valley decide to go bicycle riding one day. Simon rides at a
speed of 10 miles per hour, while Liz's average speed is 20 miles per hour. After
bicycling for several hours, both Simon and Liz come home and park their bicycles
exactly where they started. Simon's average velocity for the entire ride is
a)
b)
c)
d)
lower than Liz's average velocity
higher than Liz’s average velocity
zero
impossible to determine without knowing the direction in which they were
going.
5. If, during their bike ride, Simon and Liz were always biking at a constant speed,
a) Their acceleration was always zero
b) Their velocity was always constant
c) Their average velocity after one hour of biking was the same as their average
velocity after two hours of biking
d) None of the above
6. The graph shown represents the relationship between distance and time for an
object in motion. During which interval is the
speed of the object changing?
a) AB
b) BC
c) CD
d) DE
7. A raindrop on a drizzly day takes one minute from the time it leaves the cloud until
it hits your umbrella, which is 3 miles below. The average velocity of the raindrop
on its journey is
a) 3 miles/hr
b) 60 miles/hour
c) 180 miles/hr
8. The graph below shows the speed of an
object plotted against the time.
The total distance traveled by the
object in the first 4 seconds is
a) O.5 meters
b) 8 meters
c) 2 meters
d) 4 meters
9. A speedboat increases its speed uniformly from 20 m/s to 30 m/s in a distance of
200m. Find the magnitude of its acceleration.
a) 1.25 m/s2
b) 4.0 m/s2
c) 8.0 m/s2
d) 10 m/s2
10. A tortoise and a hare are in a road race to defend the honor of their breed. The
tortoise crawls the entire 1000 meters at a speed of 0.2 m/s. The rabbit runs the
first 200 meters at 2 m/s, stops to take a nap for 1.3 hours, and awakens to finish
the last 800 meters with an average speed of 3 m/s. Who wins the race and by how
much time?
a)
b)
c)
d)
They both arrive at the same time
Tortoise wins by 47 s
Rabbit wins by 45 s
Insufficient information, can’t be determined