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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
Jose
C
None of the above
D
Victor
2) Newton's First Law is also called the Law of inertia. Which of these scenarios is best explained by this law?
A
All of the above
B
Stopping a roller coaster cart suddenly thrust passengers into their seat belts
C
A rocket that is propelled upward into space by gases pushing downward on earth.
D
A TV was harder to move than a refrigerator because it had a smaller mass.
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 Third Law - Action/Reaction
B
None fo the above
C
Newton's First Law - Law of Inertia
D
Newton's Second Law - Force = Mass x Acceleration
4) Which of the following describes an object accelerating?
A
a car moving at 30 miles per hour
B
a bike moving backward at 2 miles per hour
C
a boy running 5 miles per hour south, then east
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, Velocity, and Acceleration
B
Velocity and Acceleration
C
Speed
D
Speed and Velocity
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
25 m/s
B
2.5 m/s
C
5.0 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
1.25 mph
B
250 mph
C
500 mph
D
125 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
0N; there is no motion
B
5N; in the direction of Mrs. Hernandez's class
C
None of the above
D
5N; in the direction of Ms. Lopes 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 A - 5kg
B
Ball C - 15kg
C
Ball D - 20kg
D
Ball B - 10kg
10) Which of the following is not an example of kinetic energy?
A
A ball bouncing between basketball players
B
A car driving up a hill
C
An ant walking across the ground
D
A book sitting on a table
*select an answer for all questions
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