Practice Exercise

Problem

Try extracting variables from this problem:

"A 50 kg student jumps from a 3-meter platform (to water, not concrete). How fast are they moving just before hitting the water?"

Solution

Your extraction should be:

• Known: m = 50 kg, S = 3 m, v₀ = 0 m/s (starts from rest), a = 9.8 m/s² (gravity)
• Find: v (final velocity)

Note that the mass is actually unnecessary for this problem as RyzykFizyk would recognize this and use the kinematic equation v² = v₀² + 2aS directly.