Three forces act on a 20.0-kg object. The first force has a magnitude of 60.0 N and is directed 25.0° north of east. The
second force is 32.0 N, 40.0° north of west. The third force has a
magnitude of 60.0 N and is directed 20.0° south of east. Determine
the magnitude of the net force on the object.
0 900 N
O 81.0N
0 658 N
0 62.0 N
0 712 N
0 75.0 N
0 95.0 N
O 85.0N

How much work would a child do while puling a 12-kg wagon a distance of 3m with a 22 n force directed 30 degrees with respect to the horizontal? (a) 82j (b) 52j (c) 109j (d) 95j

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.