FREE FALL
g = 10 m/s² · v = gt
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Drop a Ball: Free Fall
0 m
10 m
20 m
30 m
40 m
45 m
0.5 s
1.0 s
1.5 s
2.0 s
2.5 s
3.0 s
0
1
2
3
10
20
30
time (s)
v (m/s)
slope = g
time
velocity v = gt
distance ½gt²
1. Equations (g ≈ 10 m/s²)
v = g t
S = ½ g t²
At the start v₀ = 0 (just released)
2. Second by Second
1 s: 10 m/s · 5 m
2 s: 20 m/s · 20 m · 3 s: 30 m/s · 45 m
3. Remember
Without air, a feather and
a stone fall together
MATRIC PHYSICS · KINEMATICS · PUNJAB BOARDS
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