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What will happen if you set initialSpringVelocity to 5 in this animation?

medium📝 Predict Output Q5 of 15
iOS Swift - Animations
What will happen if you set initialSpringVelocity to 5 in this animation?
UIView.animate(withDuration: 1.0, delay: 0, usingSpringWithDamping: 0.7, initialSpringVelocity: 5, options: [], animations: { view.alpha = 0 }, completion: nil)
AThe animation will not run due to invalid velocity
BThe animation starts quickly and then slows down smoothly
CThe animation ignores the velocity and runs normally
DThe animation starts slowly and speeds up at the end
Step-by-Step Solution
Solution:
  1. Step 1: Understand initialSpringVelocity effect

    This parameter controls the starting speed of the animation; higher values start faster.
  2. Step 2: Analyze given values

    With velocity 5 and damping 0.7, animation starts quickly and slows smoothly to rest.
  3. Final Answer:

    The animation starts quickly and then slows down smoothly -> Option B
  4. Quick Check:

    High initial velocity = fast start, then slow [OK]
Quick Trick: Initial velocity controls animation start speed [OK]
Common Mistakes:
  • Thinking velocity is ignored
  • Assuming animation won't run with high velocity
  • Confusing velocity with duration

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