Consider an object sliding at constant velocity along a frictionless surface. which of the following best describes the forces on the object?

there is a net force at right angles to the direction of motion

there is a net force in the direction of motion, that is independent of the object’s velocity

there is zero net force on the object

there is a net force in the direction of motion, that depends on the object’s velocity

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.