An object moves in the positive x?direction under the influence of a force Fx. A graph of Fx versus vx is shown.
(a) What is the instantaneous power on the object when its velocity is 22 m/s?
(b) What is the instantaneous power on the object when its velocity is 48 m/s?
An object moves in the positive x?direction under the influence of a force Fx. A graph...
A force moves an object in the direction of the force. The graph shows the force versus the object's position (a) Find the work done when the object moves from 0 to 2.0 m. (b) If the mass of this object is 1.5 Kg and it started from rest find the final velocity at 2.0 m.
A 2.0 kg object moves along the x-axis under the influence of an unknown force. Its potential energy due to the force is U(x) = ax4 + bx2 , where a = 2.5 J/m4 and b = 12 J/m2 a) What is the force on the object when x = 0.5 m? b) If the object is released from rest at x = 0.5 m, what is its velocity when it crosses the origin?
An object is under the influence of a force as represented by the force vs. position graph in Figure 7-5. What is the work done as the object moves from 4 m to 6 m? An object is under the influence of a force as represented by the force vs. position graph in Figure 7-5. What is the work done as the object moves from 4 m to 6 m?
A book moves 2.40 m in the +x-direction under the influence of a 45.7 N force, also in the +x-direction. What is the work done on the book?
an object moves in the +x direction at a speed of 48 m/s. As it passes through the origin, it starts to experience a constant acceleration of 4.0 m/s^2 in the -x direction. a. how much time elapses before the object returns to the origin? b. what is the magnitude of the velocity of the object when it returns to the origin? c. what is the direction of the velocity of the object when it returns to the origin? -x...
An object of mass m = 4.2 kg moves under the influence of one force. That force causes the object to move along a path given by x = 6.8 + 5.2 t + 2.8 t2, where x is in meters and t is in seconds. Calculate the work done by the force on the object from t = 2.5 s to t = 6.5 s. ____J
The only force acting on a 2.6 kg body as it moves along the positive x axis has an x component Fx = −7x N, where x is in meters. The velocity of the body at x = 3.0 m is 8.2m/s. The only force acting on a 2.6 kg body as it moves along the positive x axis has an x component Fx =-7x N, where x is in meters. The velocity of the body at x = 3.0 m...
The force Fx acting on a 0.500-kg particle is shown as a function of x in (see below). (a) From the graph, calculate the work done by the force when the particle moves from x = 0.00 to the following values of x: -4.00, -3.00,-2.00, -1.00, +1.00, +2.00, +3.00, and +4.00 m. (b) If it starts with a velocity of 2.00 m/s in the +x direction, how far will the particle go in that direction before stopping?
1. What is the direction of the magnetic force on a positive charge that moves as shown in each of the six cases shown in Figure 22.50 of the text book? (6pts) (you can ask like: (a) left, (b) up, etc.) 2. What is the direction of the velocity of a positive charge that experiences the magnetic force shown in each of the three cases in Figure 22.51 of the textbook, assuming it moves perpendicular to B? (6pts) 3. What...
Exercises 1. Suppose a force acts on a 4.00 kg object in the x-direction. The force varies with time and is given by F(t)12.0t3 - 8.00 N. At t -0, the object has a velocity of 3.00 m/s in the positive x-direction. Use the impulse-momentum theorem to find the object's velocity after 2.00 s. 2. In a lab experiment, a spring gun projects a metal sphere. The sphere leaves the spring gun with a velocity of 3.00 m/s in the...