A-LevelPhysicsKinematics9702/12 · Feb/Mar 2016 · Q61 Mark
An object has an initial velocity u and an acceleration a. The object moves in a straight line through a displacement s and has final velocity v. The above quantities are related by the equation shown. v² = u² + 2as Which condition must be satisfied in order for this equation to apply to the motion of the object?
AThe direction of a is constant and the direction of a is the same as the direction of s.
BThe direction of a is constant and the direction of a is the same as the direction of u.
CThe magnitude of a is constant and the direction of a is constant.
DThe magnitude of a is constant and the direction of a is the same as the direction of v.
✓ Correct answer
C: The magnitude of a is constant and the direction of a is constant.
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