8c7p11) A 114 kg object moves in a horizontal straight line with an initial speed of...
2. A 106-kg object is initially moving in a straight line with a speed of 51.3 m/s. (a) If it is brought to a stop with a decelera- tion of 1.97 m/s2, what force is required, what distance does the object travel, and how much work is done by the force? (b) An- swer the same questions if the object's deceleration is 4.82 m/s?. 3. To push a 25-kg crate up a 27° incline, a worker exerts a force of...
Problem 10-45a: A 2.50-kg particle moves at constant speed of 7.00m/s along a straight line. What is the magnitude of its angular momentum about a point 8.00m from the line? Submit Answer Tries 0/5 A Post Discussion Send Feedback
6. A 2.0-kg object moves in a straight line on a horizontal frictionless surface. The graph above shows the velocity of the object as a function of time. The various equal time intervals (sections) are labeled using Roman numerals: I, II, III, IV, and V. The net force on the object always acts along the line of motion of the object Which section(s) of the graph correspond to a condition of zero net force? a. b. Which section(s) of the...
Two forces act simultaneously on an object while it moves 2.82 m in a straight line on a horizontal surface. No other forces are acting. The forces are parallel to the surface and cause the kinetic energy of the object to change from 114 J to 222 J. If one of the forces is 155 N, what is the second force?
3. A 0.5 kg object moves along a straight line. The net force acting on the object varies with its displacement as shown by the graph on the next page. The object starts from rest at x = 0 and travels a total distance of 20 m. 5 4 Force 2 6 8 10 1214 16 18 2022 Displacement (m) each of the following: (a) the acceleration of the object at x-6 m (b) the time needed for the object...
PROBLEMS and QUESTIONS 1. An object moves across the floor and comes to a stop. Explain how Aristotle and Galileo would view this motion differently. 2. Explain the difference between speed and velocity and give examples of each. 3. Explain how an object can have a constant speed and a varying velocity. 4. What are the units of acceleration? 5. If an automobile travels at the rate of 40 miles per hour, how long will it take to travel 400...
The acceleration of a particle as it moves along a straight line
is given by a=(2t−1) m/s2, where t is in
seconds. Suppose that s = 8 m and v = 9 m/s when
t = 0
Previous Answers The acceleration of a particle as it moves along a straight line is given by a (2t-1) m/s2, where t is in seconds. Suppose that s 8 m and 9m/s when VCorrect Part B Determine the particle's position when 8 s...
5. An object is moving along a straight line on a horizontal surface. The weight of the object is 50 N The initial kinetic energy of the object is 100 J. The kinetic friction force is 25 N. Due to the friction the object comes to a stop. Refer to the figure for problem 5. 15) What is the work done by the friction force? a) -200 J a) -200 J A) o, 5 b) 0 J c) 100 J...
A 5.0 kg block moves in a straight line on a horizontal
frictionless surface under the influence of a force that varies
with position as shown in the figure. The scale of the figure's
vertical axis is set by Fs = 14.0 N.
How much work is done by the force as the block moves from the
origin to x = 8.0 m?
-F02 46 Position (m) Force (N)
In Case A, an object is moving in a straight line at a constant speed of 9.8 m/s. In Case B, an object is moving in a straight line with a constant acceleration of 9.8 m/s2. Which of the following statements is true? a. A nonzero net external force acts on the object in neither case. b. A nonzero net external force acts on the object in both cases. c. A nonzero net external force acts on the object in...