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Unbalanced Forces And Newton's Laws
Test Description: Balanced and Unbalanced Forces and some Newton's Laws Questions
Instructions: Answer all questions to get your test result.
1) Victor kicked a .4 kg soccer ball with a force of 8N, and Jose kicked a .2 kg soccer ball with a force of 4N. Whose ball had the greater acceleration?
A
Their accelerations were the same
B
Victor
C
None of the above
D
Jose
2) Newton's First Law is also called the Law of inertia. Which of these scenarios is best explained by this law?
A
Stopping a roller coaster cart suddenly thrust passengers into their seat belts
B
A TV was harder to move than a refrigerator because it had a smaller mass.
C
All of the above
D
A rocket that is propelled upward into space by gases pushing downward on earth.
3) A rocket that is propelled upward into space by gases pushing downward on Earth. Which of Newton's three laws does this describe?
A
Newton's First Law - Law of Inertia
B
None fo the above
C
Newton's Second Law - Force = Mass x Acceleration
D
Newton's Third Law - Action/Reaction
4) Which of the following describes an object accelerating?
A
a car moving at 30 miles per hour
B
a boy running 5 miles per hour south, then east
C
a bike moving backward at 2 miles per hour
D
a ball sitting on the floor
5) William rode his bicycle 100 meters south in 20 seconds, and then went east another 100 meters in 20 seconds. Which of these terms can best be used to describe these changes?
A
Speed
B
Velocity and Acceleration
C
Speed and Velocity
D
Speed, Velocity, and Acceleration
6) A car accelerates from 25 m/s to 50 m/s over a time of 10 seconds. What is the average acceleration of the car?
A
5.0 m/s
B
25 m/s
C
2.5 m/s
D
50 m/s
7) A race car driver complete a 250 mile race in about 2 hours. What was the driver's average speed?
A
125 mph
B
250 mph
C
1.25 mph
D
500 mph
8) Ms. Lopes' class is playing tug-of-war against Mrs. Hernandez's class. Ms. Lopes' class exerts 120N of force. Mrs. Hernandez's class exerts 125N of force. What is the net force?
A
5N; in the direction of Ms. Lopes class
B
None of the above
C
0N; there is no motion
D
5N; in the direction of Mrs. Hernandez's class
9) Four balls were all laid on a level table side by side. Which of the balls would have the greatest amount of inertia?
A
Ball B - 10kg
B
Ball A - 5kg
C
Ball C - 15kg
D
Ball D - 20kg
10) Which of the following is not an example of kinetic energy?
A
A car driving up a hill
B
An ant walking across the ground
C
A book sitting on a table
D
A ball bouncing between basketball players
*select an answer for all questions
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