Acceleration describes which of the following?
Correct answer: C. The speed and direction of motion are changing
- A. Speed is changing
- B. The speed and force are changing
- C. The speed and direction of motion are changing
- D. The direction of motion are changing
Explanation
Option C is correct since acceleration is a vector quantity i.e has a direction and magnitude. It describes how the speed and direction of motion are changing.
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About Force and Motion
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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