Mathematics · Motion in a Plane
A ball is projected from the ground at an angle θ with the horizontal. After 1 s, it moves at an angle of 45° with the horizontal, and after 2 s, it moves horizontally. What is the initial speed of projection of the ball? (Take g = 10 m/s2)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 110√3 m/s
- 220√3 m/s
- 310√5 m/s✓
- 420√2 m/s
Correct answer
10√5 m/s
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