Physics 1 Lab Exam #1 (SCUHS) ACTUAL UPDATED QUESTIONS AND CORRECT
ANSWERS
Rank the following time intervals, with the largest at the 1. 6 min
top and the smallest at the bottom (100 s, 0.01 hr, 6 min) 2. 100 s
3. 0.01 hr
Rank the following distances, with the largest at the top 1. 0.01 km
and the smallest at the bottom (0.01 km, 100 cm, 6 m) 2. 6 m
3. 100 cm
Rank the following speeds, with the largest at the top and 1. 6 m/s
the smallest at the bottom (120 m/min, 6 m/s, 0.36 km/hr) 2. 120 m/min
3. 0.36 km/hr
, An apple is larger than and weights more than a grape. If The apple's acceleration magnitude is equal to the grape's acceleration
both objects are in free fall, then which statement is true? magnitude.
(The apple's acceleration magnitude is greater than the
grape's acceleration magnitude.
The apple's acceleration magnitude is less than the
grape's acceleration magnitude.
The apple's acceleration magnitude is equal to the
grape's acceleration magnitude.)
Which force (or forces) is (or are) assumed to act on an Only the gravitational force is assumed to act.
object when it is in free fall? No forces are assumed to
act.
Only the gravitational force is assumed to act.
The gravitational and air resistance forces are both
assumed to act.)
Which of the following is equal to 60 frames/min? (60 3600 frames/hr
frames/s
3600 frames/s
60 frames/hr
3600 frames/hr)
If two objects have the same initial position at the same average speed
initial time, and the same final position at the same final
time, then which speed would always be the same for
both?
A train travelled a total distance of 120 km. During the first 40 km/hr
60 km, it travelled at an average speed of 30 km/hr.
During the last 60 km, it travelled at an average speed of
60 km/hr. What was its average speed over the total
distance of 120 km?
A bus travelled a total distance of 80 km. During the first 40 km/hr
hour, it travelled at an average speed of 30 km/hr. During
the last hour, it travelled at an average speed of 50 km/hr.
What was its average speed over the total distance of 80
km?
An object is dropped from rest and undergoes free-fall. 2.00 s
How much time does it take for the object to fall 19.6 m?
Use g = 9.80 m/s2g = 9.80 m/s2 as the magnitude of the
acceleration due to gravity.
An object is dropped from rest and undergoes free-fall. 78.4 m
How far does the object fall in 4.00 s? Use g = 9.80 m/s2g
= 9.80 m/s2 as the magnitude of the acceleration due to
gravity.
ANSWERS
Rank the following time intervals, with the largest at the 1. 6 min
top and the smallest at the bottom (100 s, 0.01 hr, 6 min) 2. 100 s
3. 0.01 hr
Rank the following distances, with the largest at the top 1. 0.01 km
and the smallest at the bottom (0.01 km, 100 cm, 6 m) 2. 6 m
3. 100 cm
Rank the following speeds, with the largest at the top and 1. 6 m/s
the smallest at the bottom (120 m/min, 6 m/s, 0.36 km/hr) 2. 120 m/min
3. 0.36 km/hr
, An apple is larger than and weights more than a grape. If The apple's acceleration magnitude is equal to the grape's acceleration
both objects are in free fall, then which statement is true? magnitude.
(The apple's acceleration magnitude is greater than the
grape's acceleration magnitude.
The apple's acceleration magnitude is less than the
grape's acceleration magnitude.
The apple's acceleration magnitude is equal to the
grape's acceleration magnitude.)
Which force (or forces) is (or are) assumed to act on an Only the gravitational force is assumed to act.
object when it is in free fall? No forces are assumed to
act.
Only the gravitational force is assumed to act.
The gravitational and air resistance forces are both
assumed to act.)
Which of the following is equal to 60 frames/min? (60 3600 frames/hr
frames/s
3600 frames/s
60 frames/hr
3600 frames/hr)
If two objects have the same initial position at the same average speed
initial time, and the same final position at the same final
time, then which speed would always be the same for
both?
A train travelled a total distance of 120 km. During the first 40 km/hr
60 km, it travelled at an average speed of 30 km/hr.
During the last 60 km, it travelled at an average speed of
60 km/hr. What was its average speed over the total
distance of 120 km?
A bus travelled a total distance of 80 km. During the first 40 km/hr
hour, it travelled at an average speed of 30 km/hr. During
the last hour, it travelled at an average speed of 50 km/hr.
What was its average speed over the total distance of 80
km?
An object is dropped from rest and undergoes free-fall. 2.00 s
How much time does it take for the object to fall 19.6 m?
Use g = 9.80 m/s2g = 9.80 m/s2 as the magnitude of the
acceleration due to gravity.
An object is dropped from rest and undergoes free-fall. 78.4 m
How far does the object fall in 4.00 s? Use g = 9.80 m/s2g
= 9.80 m/s2 as the magnitude of the acceleration due to
gravity.
