Release a ball from rest and flash a strobe every 0.2 s. The gaps between flashes grow, the signature of uniform acceleration. Beside it, the velocity-time line climbs in a straight line whose gradient is g. Change the world and watch g change while the shape of the physics stays the same.
MissionDrop the ball, then say what the gradient of the velocity-time line measures.Streak 0Best 0
The gradient of the velocity-time line for the falling ball equals:
time since release t0.0 s
velocity v = g t0.0 m/s
distance fallen s = ½ g t²0.0 m
gradient of v-t line9.81 m/s²
v = u + at with u = 0; s = ut + ½at²; and v² = u² + 2as. Here a = g.