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Which of the following is a correct description of the motion of a sled sliding down a hill? A) linear motion B) rectilinear motion C) curvilinear motion D) | and 2 E) All of the above ANSWERY V D) | and 2 Which of the following describe the motion of a point on the wrist during an underhand softball pitch? Question 2 options: A) gencral motion B) rotary motion c) circular motion D) rectilinear motion EB) angular motion ANSWERVV C) circular motion Which of the following describe the entire motion of a gymnast doing a giant swing (one complete revolution) on the high bar? A. rotary motion B. circular motion C. curvilinear motion D. 1 and 2 E. All of the above ANSWERV V A. rotary motion Which of the following is an example of curvilinear motion? A) the earth moving towards the sun B) the earth moving away from the sun Cc) the earth moving around the sun D) the earth rotating around its’ axis while moving toward the sun E) the earth rotating around its’ axis while moving away from the sun ANSWERV ¥V C) the earth moving around the sun Which of the following statements is FALSE? A) linear motion occurs when a system moves with uniform distance, speed, and direction in a straight line B) linear motion occurs when a system moves with uniform distance, speed, and direction along acurved path You went on the following trip. From your house, you drive 2 miles due north to get your friend in 10 minutes, and 3 miles east to the grocery store in 15 minutes. Then, you drive 2 miles north to the coast and § miles west to your favorite spot on the beach in 20 minutes. Unfortunatcly, you forgot something, so you drive 2 miles south, 2 miles cast, and 2 miles south in 15 minutes What was the average velocity over the entire trip? Question 8 options: A) 0 mph B) 8 mph ©) 10 mph D) 16 mph £) 18 mph ANSWERVV A) O mph You went on the following trip. From your house, you drive 2 miles due north to get your friend in 10 minutes, and 3 miles east to the grocery store in 15 minutes. Then, you drive 2 miles north to the coast and 5 miles west to your favorite spot on the beach in 20 minutes. Unfortunately, you forgot something, so you drive 2 miles south, 2 miles east, and 2 miles south in 15 minutes. What was the distance of the entire trip? Question 7 options: A) 0 miles B) 8 miles Cc) 10 miles b) 16 miles k) 18 miles ANSWERV V E) 18 miles A change in displacement with a change in velocity is called Question 9 options: A) distance B) speed o) acceleration bD) jerk F) none of the above ANSWERV V E) none of the above Ifan object is moving with a velocity of 10 m/s and a constant acceleration of -2 m/s2, how would its’ speed be changing? The speed would be A) increasing at a constant rate (e,g., y = X) A) 25 m/s B) 30 m/s c) 35 mis D) 40 m/s E) 45 m/s ANSWERVV C) 35 m/s An object moving with a velocity of 10 m/s has an increase in velocity to 50 m/s in 4 seconds. What was the object's acceleration during this 4 second time interval’? A) 5 m/s2 B) 10 m/s2 Cc) 15 m/s2 D) 20 m/s2 £) 25 m/s2 ANSWERV ¥ B) 10 m/s2 Which of the following describes the position of an object in a global reference system? A) 16 m, 30 degrees B) 10m, 24m ©) 23 m, 150 degrees D) -20 m, 15m E) All of the above ANSWERYV ¥ E) All of the above Which of the following statements is true? In a global reference system, an object with a negative acceleration would A) speed up in a positive direction B) slow down in a negative direction ©) slow down in a positive direction D) not have a change in speed E) none of the above ANSWERV ¥ C) slow down in a positive direction In a global reference system, which of the following is an accurate representation of a sprinter leaving the starting blocks? A) -s, tv, ta B) +s, +v, -a c) Is, -v, -a D) -S, -V, -a E) -s, -v, +a ANSWERVV¥ D) “8, -V, -a In the absence of aerodynamic drag forces, if an object is dropped from a building, what is the object's speed after 3 seconds? A) 9.8 m/s B) 19.6 m/s c) 29.4 m/s D) 39.2 m/s E) 49 m/s ANSWERV V C) 29.4 m/s In the absence of aerodynamic drag force, if an object is thrown upward with an initial vertical velocity of 29.4 m/s, what is the object's speed after 6 seconds? A) 0 m/s B) 9.8 m/s °) 19.6 m/s D) 29.4 m/s FE) 39.2 m/s ANSWERV V D) 29.4 m/s Which of the following when moving through the air would be considered to be a projectile? A. airplane B. bird C. balloon D. kite E. none of the above ANSWERV ¥ E. none of the above Which of the following best describe the vertical velocity of a projectile that is moving in the first half of its' parabolic trajectory? A. decreasing D. greater than 45 degrees but less than 90 degrees E. equal to 90 degrees ANSWERV ¥ B. greater than 0 degrees but less than 45 degrees Ifa ball is kicked with an initial horizontal velocity of 45 m/s and an initial vertical velocity of 0 m/s, what is its' angle of projection? A. equal to 0 degrees B. greater than 0 degrees but less than 45 degrees C. equal to 45 degrees D. greater than 45 degrees but less than 90 degrees E, equal to 90 degrees ANSWERV V A. equal to 0) degrees Ifa ball is kicked with a projection angle of 80 degrees, then the object will be in the air a time, and have a horizontal speed A. long; small B. long; large C. short; small D. short; large E. long; zero ANSWERV V A. long; small Ifa ball is kicked with a projection angle of 0 degrees, then the object will be in the air a time, and have a horizontal speed. A. long; small B. long; large C. short; small D. zero; large F. short; zero ANSWERV ¥ D. zero; large An object is projected horizontally off the top of a building. In the absence of gravity, what would be the trajectory of the object? A. a parabola B. half'a parabola C. a straight line D. an U-shape curve E. cannot be determined ANSWERYV ¥ C. a straight line An object is projected upwards from the ground at a 45 degree angle. In the absence of air resistance, what would be the trajectory of the object? A. a parabola B. half a parabola C. a straight line D. an U-shape curve E. cannot be determined ANS WERV V A. a parabola Which of the following when moving through the air would be considered to be a projectile? A) airplane B) bird Cc) balloon D) kite D) zero Ly not cnough information to determine ANS WER¥V V D) zero During the second half of a projectile's parabolic trajectory, the vertical velocity component will » while the horizontal velocity component will A) increase; increase B) decrease; remain the same c) remain the same; decrease D) remain the same, increase kr) increase; remain the same ANSWERV V E) increase; remain the same Ifa ball is kicked with an initial horizontal velocity of 65 m/s and an initial vertical velocily of 25 m/s, what is its' angle of projection? A) 21.03 degrees B) 22.62 degrees Cc) 45 degrees b) 67.38 degrees RE) 68.96 degrees ANSWERV V A) 21.03 degrees Ifa ball is kicked with a velocity of 45 m/s at a 30 degree angle, what is the horizontal velocity? A) 21.2 m/s B) 22.5 m/s C) 25.98 m/s D) 30 m/s BE) 38.97 m/s ANSWERV ¥ E) 38.97 m/s Ifa ball is kicked with a projection angle of 80 degrees, having a vertical velocity of 60 m/s, what is the initial ball velocity when it left the foot? A) 10.58 m/s A) a parabola B) half a parabola c) a straight line D) an U-shape curve B) cannot be determined ANSWERV V C) a straight line An object is projected upwards from the ground at a 45 degree angle. In the absence of air resistance, what would be the trajectory of the object’? A) a parabola B) half'a parabola Cc) a straight line D) an U-shape curve £) cannot be determined ANSWERV V A) a parabola To maximize horizontal displacement in the absence of gravity, an object projected from the top of a building should have a projection angle of A) 0 degrees B) greater than 0 degrees but less than 45 degrees c) 45 degrees D) greater than 45 degrees but less than 90 degrees E) 90 degrees ANSWERV V A) 0 degrees ‘To maximize vertical velocity, an object should have a projection angle of A) 0 degrees B) greater than 0 degrees but less than 45 degrees ° 45 degrees D) greater than 45 degrees but less than 90 degrees E) 90 degrees ANSWERV ¥ E) 90 degrees 
