It is the ball just "trying" to stay still as the elevator accelerates upward.

Julie crouched in the dark tunnel, feeling the same sensation she felt in an elevator as it accelerated upward.

But as stock prices accelerated upward in the new year, money again began flowing to the higher-risk funds.

Now, it was half its own height into the air, accelerating upward.

As they accelerate upward, he says, "A guy with moves.

It was accelerating upward, of course, but its velocity over the ground was close to zero just now.

"We'll come up under it and shoot as it accelerates upward."

The elevator now begins to accelerate upward at constant rate.

When the elevator accelerates upward, force between the beaker and the water increases.

The ball accelerates upward with the elevator without having to sink to a greater depth.