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The teacher understands forces and motion and their relationships.
The beginning teacher:
A. Demonstrates an understanding of the properties of universal forces (e.g., gravitational, electrical, magnetic).
B. Understands how to measure, graph and describe changes in motion by using concepts of position, direction of motion and speed.
C. Analyzes the ways unbalanced forces acting on an object cause changes in the position or motion of the object.
D. Analyzes the relationship between force and motion in a variety of situations (e.g., simple machines, geologic processes).

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An object is being acted on by a force of 20 N directed to the left and a force of 30 N directed to the right. What is the net force acting on the object?

1. 10 N to the left

2. 50 N to the left

3. 10 N to the right

4. 50 N to the right

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Question 1
2013
Answer: B
Key word/ content vocab: rolling ball, tap, direction

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Key words/ Vocab: spring scale, measure force

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Answer: F
keywords/vocab: long, deep, formed

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answer: A

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Answer: D
Keywords/ Vocab: force, masses, move

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vocabulary- masses, force, ramp

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Key words: hydrothermal vents, streams, hot water, boiling point -Morning group #3

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Question 36, Key words:Pulley System,lift, move backwards, celling hook,end of rope. Answer: H - Morning Group #3

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Vocabulary/ key words: Push, force, "causes to stop", same direction/ opposite directions

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Keywords-moving, pull/push

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Keywords: force, masses, rest, ramp, change, reduce, move

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Answer- D
Keywords- wagon is pushed and begins to move, but then slows and comes to a stop

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For an investigation, a student measures the speed of a cart as it rolls down a ramp. The student then records data in the table below.Which of these best explains the student’s data?

F  The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.

G  The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.

H  The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.

J The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.

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Four students raced toy cars on a track. The mass and the acceleration of each car is recorded in the table below.Which toy car had the greatest applied force?

F1
G2
H3
J4

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A car travels at a constant speed of 15 m/s for 2 minutes. The car increases its speed from 15 to 25 m/s during the next minute and then travels at a constant speed of 25 m/s for
2 more minutes. Which of the following graphs best represents the car’s motion during this 5-minute period?

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A student walks 2 km in 30 minutes. What is the student’s average speed in km/h? Record your answer and fill in the bubbles on your answer document. Be sure to use the

correct place value.

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Some students measure the acceleration of a wheeled cart being acted on by varying forces. The students record their data in the table shown above. According to the data table, how much force is acting on the cart when the students measure an acceleration of 2.6 m/s2?

F 13N

G7N

H8N

J 12N