Question

A rock dropped from a small bridge encounters no air resistance and hits the pond below 1.0 s later.

If it had been thrown horizontally with a speed of 10 m/s, then it would have hit the water

A. more than 1.0 {s} later, since it has a greater distance to travel.
B. 1.0 {s} later, since the vertical motion is not affected by the horizontal motion.
C. less than 1.0 {s} later, since the higher speed would tend to get the ball to the ground more quickly.

Answer 1

Answer:
B. 1.0s later, since the vertical motion is not affected by the horizontal motion

Answer 2

1) A simple harmonic motion is described by a = - 16x, where a is acceleration in m/s2 and x is displacement in m. What is the time period?