30 March, 10:07
A 60.0 kg soccer player kicks a 0.4000 kg stationary soccer ball with 6.25 N of force. How fast does the soccer ball accelerate, assuming that no friction acts on the ball?
a) 2.50 m/s2
b) 3.84 m/s2
c) 15.6 m/s2
d) 97.7 m/s2
30 March, 10:45
F = ma
6.25 N = 0.4 kg · a
a = (6.25/0.4) m/s² since N=kg·m/s²
a = 15.625 m/s²
The answer is c) 15.6 m/s²
(Note that the mass of the soccer player is irrelevant.)
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» A 60.0 kg soccer player kicks a 0.4000 kg stationary soccer ball with 6.25 N of force. How fast does the soccer ball accelerate, assuming that no friction acts on the ball? a) 2.50 m/s2 b) 3.84 m/s2 c) 15.6 m/s2 d) 97.7 m/s2