Consider a ball that is thrown vertically upwards with an initial speed of 4.20 m/s from the roof of a building that is 52.7 m tall. Neglect air resistance. With what velocity does the ball strike the ground?
A. –32.4 m/s.
B. –32.1 m/s.
C. –31.9 m/s.
D. –22.6 m/s.
Answer:A
Consider a ball that is thrown vertically upwards with an initial speed of 4.20 m/s from the roof of a building that is 52.7 m tall. Neglect air resistance. With what velocity does the ball strike the ground?
A. –32.4 m/s. B. –32.1 m/s. C. –31.9 m/s. D. –22.6 m/s.