A2-kilogram block rests at the edge of a platform that is 10meters above level. the block is launched horizontally from theedge of the platform with an initial speed of 3 meters per second. air resistance is negligible. the time it will take for the blockto reach the ground is most nearly
a. 0.3 s
b. 1.0 s
c. 1.4 s
d. 2.0 s
e. 3.0 s

Which statement is true about an object that is moving in a circular motion due to centripetal force, f, when the radius of its circular motion is doubled? the new force then becomes equal to 2f the new force then becomes equal to f the new force then becomes equal to f/2 the new force then becomes equal to f2 the new force then becomes equal to 1/f