Use concepts of Kinematics, Work and Energy.
۱۲:۳۲ 2 4G liu. الملفات 4. An object of mass 2 kg has kinetic energy of...
An object has a kinetic energy of 284 J and a momentum of magnitude 23.5 kg · m/s. (a) Find the speed of the object. m/s (b) Find the mass of the object. kg
At a particular instant, a moving object has a kinetic energy of 312 ) and a momentum of magnitude 26.8 kg. m/s. (a) What is the speed (in m/s) of the object at this instant? m/s (b) What is the mass (in kg) of the object at this instant? kg
An object has a kinetic energy of 296 J and a momentum of magnitude 21.3 kg-m/s. Find the speed and the mass of the object. speed m/s mass kg Three carts of masses m_1 = 5.00 kg, m_2 = 9.50 kg, and m_3 = 3.00 kg move on a frictionless, horizontal track with speeds of V_1 = 7.00 m/s to the right, v_2 = 3.00 m/s to the right, and v_3 = 3.50 m/s to the left, as shown below....
An object has a kinetic energy of 254 J and a momentum of magnitude 23.7 kg·m/s. Find the speed and the mass of the object. speed m/s mass kg
As shown in the figure below, object m1 = 1.60 kg starts at an initial height hij = 0.305 m and speed V1 = 4.00 m/s, swings downward and strikes in an elastic collision) object m2 = 4.55 kg which is initially at rest. 4.00 m/s m2 (a) Determine the speed of m(in m/s) just before the collision. X After you are convinced that energy is conserved as m, swings downward for the collision with me, see if you can...
A truck with a mass of 1710 kg and moving with a speed of 14.0 m/s rear-ends a 613 kg car stopped at an intersection. The collision is approximately elastic since the car is in neutral, the brakes are off, the metal bumpers line up well and do not get damaged. Find the speed of both vehicles after the collision in meters per second. m/s truck m/s car As shown in the figure below, object m, = 1.50 kg starts...
A object of mass 3.00 kg is subject to a force Fx that varies with position as in the figure below. Fx (N) 3 x (m) 2 4 6 8 10 12 14 16 18 20 (a) Find the work done by the force on the object as it moves from x 0 to x = 5.00 m. (b) Find the work done by the force on the object as it moves from x 5.00 m to x 10.0 m....
Net 15.04 4. An object of mass M = 12.0 kg is moving in the + x direction. As it passes the point x = 0, its speed is 5.00 m/s. The graph shows the net force, which points in the + x direction, that is acting on the object. Calculate: a) The net work done on the object as it moves from x=0 to X = 5.00 m b) The speed of the object as it passes the point...
1-4 using Work-Energy Theorem/KE and PE thank you! not 1. An object of mass 0.5kg is projected from ground at 40m/s. Find the work done by gravity on the object, when it is at (a) 10m above the ground -49 Joules (b) 15m above the ground.- 73.5 Joules (c) Find the potential energy of the object in (a) and (b) relative to the ground. PE-mgh 49 J/73.55 2. A block of is sliding down a slope as shown in the...
An object with mass 3.5 kg is attached to a spring with spring stiffness constant k = 250 N/m and is executing simple harmonic motion. When the object is 0.020 m from its equilibrium position, it is moving with a speed of 0.55 m/s. (a) Calculate the amplitude of the motion. _______________________________ m (b) Calculate the maximum velocity attained by the object. [Hint: Use conservation of energy.] _______________________________ m/s