Agirl pushes a 10.0kg sled at a constant speed by applying a force of 75n at an angle of 30 degrees with respect to the horizontal. the sled is pushed over a distance of 15 meters. how much work is done by the force of friction?

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s.calculate eddy’s power rating

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k