Consider a displacement-time graph of an object moving along the x-axis. The negative gradient of the graph represents:
Correct answer: B. Velocity in negative x-direction
- A. Velocity in x-direction
- B. Velocity in negative x-direction
- C. Acceleration in x-direction
- D. Acceleration in negative x-direction
Explanation
The gradient of a displacement/time graph gives the velocity so Options C and D should not be considered. If the slope is a negative slope then the velocity is also negative, hence Option B is the correct answer.
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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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