H2P-583
Projectile motion
H2 Physics · JC 2 · Hard · Projectile motion
A ball is thrown horizontally from a cliff and lands in the sea 18 m below. Take upwards as positive and use the kinematics equation for vertical motion, assuming air resistance is negligible. If the time taken to reach the water is 1.9 s, what is the vertical component of its velocity just before it hits the water? Take gravitational acceleration as 9.81 m s⁻².
- 18.6 m s⁻¹ downward
- 9.81 m s⁻¹ downward
- 18.6 m s⁻¹ upward
- 0 m s⁻¹
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