An object moves with a constant velocity. Which of the following is true? a. The
ID: 1566302 • Letter: A
Question
An object moves with a constant velocity. Which of the following is true? a. The position vs. time graph is linear, and slope is velocity b. The time vs. position graph is linear, and its slope is the velocity c. The velocity vs. time graph is linear, and its slope is the velocity d. The time vs. velocity graph is linear, and its slope is the velocity e. The position vs. time squared graph is linear, and its slope is the velocity An experiment measures the acceleration due to gravity to be 13 m/s. What is the error in the experiment, as compare to the accepted value of g? a. 3.2% b. 33% c. 25% d. 75% e. 133% A 500 g mass is tied to a string and swung in a horizontal circle with a radius of 40 cm. The speed of the mass is held constant, and the period of rotation is 0.7 s What is the speed of the mass? a. 0.57 m/s b. 0.9 m/s c. 1.8 m/s d. 3.6 m/s e. 4.5 m/s The direction of the velocity of the object is a. Horizontal and tangent to the circle. b. Horizontal and toward the center of the circle. c. Horizontal and outward away from the center of the circle. d. Vertical e. Vertical and tangent to the circle. The direction of the acceleration of the object is a. Horizontal and tangent to the circle. b. Horizontal and toward the center of the circle. C. Horizontal and outward away from the center of the circle. d. Vertical. e. Vertical and tangent to the circle. The acceleration of the mass is closest to a. 1 m/s^2 b. 5 m/s^2 c.10 m/s^2 d. 30 m/s^2 c. The best description of centripetal force is: a. The force that an object feels toward the outside of a circular path. b. The single force most responsible for pulling an object inward in a circular path c. The net force on an object traveling in a circular path.Explanation / Answer
A. Horizontal and tangent to circle.
drawn tangent always gives the direction of velocity