A dense metal ball descends straight down through air past four equally spaced points J, K, L and M. The intervals of time for the ball to travel from one point to the next are recorded. At which point is the ball’s speed the greatest, and which of the measured times is the smallest?
- Aspeed is greatest between J and K; time is shortest between J and K
- Bspeed is greatest between J and K; time is shortest between L and M
- Cspeed is greatest between L and M; time is shortest between J and K
- Dspeed is greatest between L and M; time is shortest between L and M