Answer: 9.8 m/s².
- A 0 m/s²
- B 5 m/s²
- C 9.8 m/s²
- D 19.6 m/s²
Correct answer: C. 9.8 m/s²
Explanation: A freely falling body has acceleration equal to g = 9.8 m/s² directed downward.
On a velocity-time graph for uniform acceleration, the slope of the line gives the acceleration and the shaded area under the line gives the displacement.
Concept context
Equations of motion, projectile motion, relative velocity. Foundation of all mechanics.