. A rubber ball with a mass of 0.040 kg is dropped from a height of 8.0 m above a floor. It bounces to a height of 3.0 m after being in contact with the floor for 0.080 s. a) Find the magnitude of the net impulse net J acting on the ball during the time it is in contact with the floor

Abearing is designed to a reduce friction b. support a load c.guide moving parts such as wheels, shafts and pivots d. all of the above

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?