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Goal 2
Test Description: Use information from class and cheat sheet to answer the following questions
Instructions: Answer all questions to get your test result.
1) A student is a passenger in the front seat of a moving car. Which object is the best frame of reference for the student to determine how fast the car is moving relative to the ground?
A
a signpost on the side of the road
B
a person siting in the backseat of the car
C
the driver sitting next to the student
D
a truck traveling in the lane next to the car
2) A car\\\'s velocity changes from 0 m/s to 40 m/s in 5 seconds. What is the average acceleration of the car?
A
200 m/s/s
B
8 m/s/s
C
35 m/s/s
D
5 m/s/s
3) An object rolls east at a steady speed of 12 m/sfor 3.0 secolnds. What distance did it travel?
A
7.0 m
B
18 m
C
36 m
D
24 m
4) A car velocity changes from 0m/s to 40m/s in 5 seconds. What is the average acceleration of the car?
A
35m/s/s
B
8m/s/s
C
5m/s/s
D
200m/s/s
5) A car starts from rest and accelerates uniformly at 1.7m/s/s. How long will it take the car to reach a speed of 34m/s?
A
2s
B
20s
C
200s
D
58s
6) A 200-kg load is suspened from a cable on a crane. The load is moved upward at a constant velocity 20m to the top of the building. What would be true of te force on the cable as it moved upwad?
A
The force on the cable depended upon the energy of the crane
B
The force of the cable remained the same
C
The force on the cable decreased
D
The force of the cable increased
7) A student uses two identical balls to perform an investigation. The student throws ball A with a horizontal velocity from a height of 10 meters. At the same time, another student drops ball B from the same height without any horizontal velocity. Negl
A
Ball A will take twice as long to hit the ground
B
Ball B will hit the ground first
C
Ball A will hit the ground first
D
Both balls will hit the ground at the same time
8) How much force is needed to accelerate a 500kg car at a rate of 4m/s/s?
A
4,000N
B
250N
C
2,000N
D
125N
9) Two equal forces act at the same time on the same stationary object but in opposite directions. Which statement describes the object's motion?
A
It accelerates
B
It remains stationary
C
It moves at a constant speed
D
It decelerates
10) a 100 - N force causes an object to accelerate at 2 m/s/s. What is the mass of the object?
A
0.02 kg
B
50 kg
C
200 kg
D
102 kg
*select an answer for all questions
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