The acceleration of a vertically-thrown ball at the top of its path is
A) zero.
B) 10 m/s2.
C) between zero and 10 m/s2.
D) dependent on the mass of the ball.
Question 2
Six seconds after starting from rest, a freely-falling baseball has a speed of
A) 10 m/s.
B) 30 m/s.
C) 60 m/s.
D) 70 m/s.