Answer: The acceleration is roughly 9.3 m/s^2
The acceleration is positive.
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Work Shown:
Using Newton's Second Law, we get,
F = m*a
52 = 5.6a
5.6a = 52
a = 52/5.6
a = 9.28571428571429 which is approximate
a = 9.3
I rounded to 2 significant figures because both 52 and 5.6 are to 2 sig figs.
The acceleration is positive because the student applied an upward force.
The units for the acceleration are in meters per second squared, abbreviated as m/s^2.
An acceleration of 9.3 m/s^2 means that after every second, the velocity has increased by 9.3 m/s.