PHYSICS 201 01
QUIZ 10
Dr. Dan Smith November 9, 1995
Name__________________________ ID________________
1. A ball is thrown upward from the roof of a building at a velocity of 28m/s at an angle of
35° with the horizontal, and the ball lands 86.5m from the base of the building. What is
the x-component of velocity (vx ) at the instant the ball strikes the ground?
(a) 0 (b) 22.9m/s (c) 16.06m/s (d) 9.8m/s2(e) none of the above
2. What is the x-component of acceleration (ax ) in problem 1?
(a) 9.8m/s2(b) 0 (c) 22.9m/s2(d) 16.06m/s2(e) none of the above
3. A sattelite orbits the earth with a uniform circular speed of 7.6km/s. What is the
direction of the sattelite's acceleration?
(a) in the direction of the velocity (b) towards the earth's center
(c) opposite to the direction of the velocity (d) acceleration equals zero