The SI unit of acceleration is _.
Correct answer: D. m/s2
- A. m
- B. m2
- C. m/s
- D. m/s2
Explanation
Acceleration is the rate of change of velocity of an object with respect to time. It is defined as the change in velocity divided by the time taken for that change to occur. The SI unit of velocity is meter per second (m/s) and the unit of time is second (s), so the SI unit of acceleration is meter per second per second (m/s²).
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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