Notes

*Which scenario best describes an object with a displacement of zero? (D)

*What is required in order to determine whether or not an object moves? (B)

*What is most often given a value of zero to describe an object’s position on a straight line? (B)

*Which does a reference point provide? Check all that apply. (1 , 5)

*Which scenario best describes motion? (C)

*Two cars started at the same position and were driven through a city using different streets. The red car traveled north 2 miles, then east 4 miles, and then south 6 miles. The green car traveled south 4 miles and then east 4 miles. Both cars ended at the same location.
Which best compares the motion of the cars? (B)

*An object starts at position 12 on a horizontal line with a reference point of 0. What is the position of the object if it moves 14 units to the left? (B)

*If the change in velocity increases, what happens to the acceleration during the same time period? (B)

*The chart shows the times and accelerations for three drivers.
Which lists them from greatest to lowest change in velocity? (D - Kira → Diego → Dustin)

*The graph depicts the velocity and times of Elan and Anna during a race.
Which best depicts the data? (C- From 6 to 8 seconds, Elan accelerated faster than Anna.)

*If the change in velocity increases, what happens to the acceleration during the same time period? (B)

*Micah knows that a car had a change in velocity of 15 m/s. To determine acceleration, Micah also needs the
(TIME ) of the total trip in seconds.

*A car is traveling in a race. The car went from the initial velocity of 35 m/s to the final velocity of 65 m/s in 5 seconds. What is the acceleration? (C)

*Ariana is accelerating her car at 4.6 m/s2. It took her 10 seconds to reach this acceleration. Her starting velocity was 0 m/s.
What was her final velocity? (D)

*Which statement could correctly explain the forces acting on the teeter totter? (A)

*Which notations are commonly used on force diagrams to show forces acting on an object? Check all that apply. (1,3,4,5)

*Which best explains the forces acting on the objects?
(B- Objects W and Y have balanced forces, and objects X and Z have unbalanced forces. )

*Haley is trying to pull an object upward. The below forces are acting on the object.
Fp = 5500N
Fg = 6000N
Which represents the net force? (D)

*An object is moving across a surface, but it does not gain or lose speed.
Which best describes the object’s force? (B)

*The resulting net force of an object is represented below.
→10 N
Which most likely represent the forces acting on the object? (C)

*Which example best represents balanced forces? (A- an elevator stopped on the third floor)

*The only force that can act on an object in free fall is (GRAVITY) .

*Where will the spacecraft be when the gravitational forces acting on it are equal? (D)

*What is the weight, on Earth, of a book with a mass of 1.5 kg? (D)

*When does a skydiver achieve terminal velocity? (A)

*Why are objects that fall near Earth’s surface rarely in free fall? (B)

*How do Newton’s laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can pass a puck as quickly as possible? (C)

*A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1 m/s and strikes a pin with a force of 15.0 N. What is the force that the pin exerts on the bowling ball? (B)

*Rahul sits in a chair reading a book. Which force is equal to the force Rahul exerts on Earth? (A)

*Juan inflates a balloon and then releases its end to let the balloon go free as air comes out. The balloon then flies around the room.
Which statement describes how this example is an application of Newton’s laws of motion? (B)

*According to Newton’s first law of motion, when will an object at rest begin to move? (B)

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