The x-t graph in the figure represents:
Correct answer: D. The body travels with constant speed up to time t1 and then stops
- A. Constant velocity
- B. Velocity of a body is changing continuously
- C. Instantaneous velocity
- D. The body travels with constant speed up to time t1 and then stops
Explanation
Displacement increases linearly with time up to t1 (straight line → constant velocity). After t , displacement becomes constant (horizontal line → body stops). Hence, the body travels with a constant speed up to time t1 and then stops.
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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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