One second after a ball rolls off the edge of a horizontal surface at a speed of 10 m/s,
A)its vertical component of velocity is 10 m/s.
B)its speed is about 14 m/s.
C)both of these
D)none of the above

Question

Quizplus · Accepted Answer

The vertical component of velocity after one second is 9.8 m/s (due to gravity, assuming g = 9.8 m/s^2), and the horizontal component remains 10 m/s. Using the Pythagorean theorem, the total speed is sqrt(10^2 + 9.8^2) ≈ 14 m/s, making both statements correct.

One Second After a Ball Rolls Off the Edge of a Horizontal