CSN Physics 110- Exam 2 with all Correct & 100%
Verified Answers |Latest Version |Already Graded A+
If a race car is traveling around a circular track at a constant speed of 100 mph, we know that the car
experiences
a. a centripetal force
b. a centrifugal force
c. a net force in the forward direction
d. no net force ✔Correct Answer-a. a centripetal force
Exhibit 4-1
A racecar is moving counterclockwise on a circular path as shown in the diagram. Imagine that at this
instant, the car is at point P and moving at a speed of 100 mph. (Right side of circle)
a. up
b. left
c. down
d. right ✔Correct Answer-a. up
Exhibit 4-1
A racecar is moving counterclockwise on a circular path as shown in the diagram. Imagine that at this
instant, the car is at point P and moving at a speed of 100 mph. (Right side of circle)
a. up
b. left
c. down
d. right ✔Correct Answer-b. left
Exhibit 4-1
A racecar is moving counterclockwise on a circular path as shown in the diagram. Imagine that at this
instant, the car is at point P and moving at a speed of 100 mph. (Right side of circle)
a. up
b. left
c. down
d. right ✔Correct Answer-b.left
Your instructor rides on a merry-go-round turning at a constant rate. In which direction does the net
force on your instructor point?
a. away from the center
b. toward the center
c. down
d. tangent to the circular path ✔Correct Answer-b. toward the center
What centripetal acceleration is required to follow a circular path with a radius of 50m at a speed of
20m/s?
, a. 6m/s^2
b. 8m/s^2
c. 4m/s^2
d. 2m/s^2 ✔Correct Answer-c. 8m/s^2
A 60kg person on a merry-go-round is traveling in a circle with a radius of 3 m at a speed of 3 m/s.
What is the magnitude of the acceleration experienced by this person?
a. 3m/s^2
b. 180m/s^2
c. 1m/s^2
d. 10m/s^2 ✔Correct Answer-a. 3m/s^2
Exhibit 4-3
A car moves with constant speed in the clockwise direction around the test track shown in the top
view diagram below left. Use the arrows shown below right to answer the following questions.
Refer to Exhibit 4-3.Which arrow best represents the direction of the car's instantaneous velocity
when it is located at point B? (right side of track)
a. southeast
b. the velocity is zero
c. up
d. down
e. southwest ✔Correct Answer-d. down
Exhibit 4-3
A car moves with constant speed in the clockwise direction around the test track shown in the top
view diagram below left. Use the arrows shown below right to answer the following questions.
Refer to Exhibit 4-3.Which arrow best represents the direction of the car's acceleration when it is
located at point C? (southeast of track)
a. acceleration is zero
b. southeast
c. northeast
d. northwest
e. southwest ✔Correct Answer-d. northwest
Exhibit 4-3
A car moves with constant speed in the clockwise direction around the test track shown in the top
view diagram below left. Use the arrows shown below right to answer the following questions.
Refer to Exhibit 4-3.Which arrow best represents the direction of the car's instantaneous velocity
when it is located at point B? (right side of track)
a. left
b. right
c. down
d. the net force is zero
e. up ✔Correct Answer-
A 2-kg ball is thrown horizontally at a speed of 10 m/s. At the same time a 1-kg ball is dropped from
the same height. Ignoring air resistance, which ball hits the ground first?
Verified Answers |Latest Version |Already Graded A+
If a race car is traveling around a circular track at a constant speed of 100 mph, we know that the car
experiences
a. a centripetal force
b. a centrifugal force
c. a net force in the forward direction
d. no net force ✔Correct Answer-a. a centripetal force
Exhibit 4-1
A racecar is moving counterclockwise on a circular path as shown in the diagram. Imagine that at this
instant, the car is at point P and moving at a speed of 100 mph. (Right side of circle)
a. up
b. left
c. down
d. right ✔Correct Answer-a. up
Exhibit 4-1
A racecar is moving counterclockwise on a circular path as shown in the diagram. Imagine that at this
instant, the car is at point P and moving at a speed of 100 mph. (Right side of circle)
a. up
b. left
c. down
d. right ✔Correct Answer-b. left
Exhibit 4-1
A racecar is moving counterclockwise on a circular path as shown in the diagram. Imagine that at this
instant, the car is at point P and moving at a speed of 100 mph. (Right side of circle)
a. up
b. left
c. down
d. right ✔Correct Answer-b.left
Your instructor rides on a merry-go-round turning at a constant rate. In which direction does the net
force on your instructor point?
a. away from the center
b. toward the center
c. down
d. tangent to the circular path ✔Correct Answer-b. toward the center
What centripetal acceleration is required to follow a circular path with a radius of 50m at a speed of
20m/s?
, a. 6m/s^2
b. 8m/s^2
c. 4m/s^2
d. 2m/s^2 ✔Correct Answer-c. 8m/s^2
A 60kg person on a merry-go-round is traveling in a circle with a radius of 3 m at a speed of 3 m/s.
What is the magnitude of the acceleration experienced by this person?
a. 3m/s^2
b. 180m/s^2
c. 1m/s^2
d. 10m/s^2 ✔Correct Answer-a. 3m/s^2
Exhibit 4-3
A car moves with constant speed in the clockwise direction around the test track shown in the top
view diagram below left. Use the arrows shown below right to answer the following questions.
Refer to Exhibit 4-3.Which arrow best represents the direction of the car's instantaneous velocity
when it is located at point B? (right side of track)
a. southeast
b. the velocity is zero
c. up
d. down
e. southwest ✔Correct Answer-d. down
Exhibit 4-3
A car moves with constant speed in the clockwise direction around the test track shown in the top
view diagram below left. Use the arrows shown below right to answer the following questions.
Refer to Exhibit 4-3.Which arrow best represents the direction of the car's acceleration when it is
located at point C? (southeast of track)
a. acceleration is zero
b. southeast
c. northeast
d. northwest
e. southwest ✔Correct Answer-d. northwest
Exhibit 4-3
A car moves with constant speed in the clockwise direction around the test track shown in the top
view diagram below left. Use the arrows shown below right to answer the following questions.
Refer to Exhibit 4-3.Which arrow best represents the direction of the car's instantaneous velocity
when it is located at point B? (right side of track)
a. left
b. right
c. down
d. the net force is zero
e. up ✔Correct Answer-
A 2-kg ball is thrown horizontally at a speed of 10 m/s. At the same time a 1-kg ball is dropped from
the same height. Ignoring air resistance, which ball hits the ground first?
