This is the case for our skydiver during the first part of the jump; their speed is increasing in the negative direction, so their velocity is becoming more negative, so their acceleration is negative...This is the case for our skydiver during the first part of the jump; their speed is increasing in the negative direction, so their velocity is becoming more negative, so their acceleration is negative. We also see that the size of the acceleration is g = 9.81 m/s 2 . We have just shown that in the absence of air resistance, all objects falling near the surface of Earth will experience an acceleration equal in size to g = 9.81 m/s 2 , regardless of their mass and weight.
