If a body is moving with constant acceleration, then
Correct answer: C. Its velocity is increasing
- A. Its direction may be changing
- B. Its acceleration is zero
- C. Its velocity is increasing
- D. None of these
Explanation
The correct answer is Option C: Its velocity is increasing. When a body moves with constant acceleration, its velocity changes uniformly over time. If the acceleration is positive and in the direction of motion, the velocity increases. Option A is incorrect because constant acceleration does not inherently imply a change in direction. Option B is incorrect because constant acceleration means the acceleration is not zero; rather, it is steady. Option D is incorrect because there is a correct choice among the provided options.
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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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