Question

An empty roller coaster car flies off the track at the very top of a high hill with a circular shape. The roller coaster is moving perfectly horizontally as it leaves the track.
Which combination of arrows best represents the possible directions of the car's velocity right as it leaves the track and a second later?

• A. When car leaves track $\to$, one seconds later $\searrow$
• B. When car leaves track $\to$, one seconds later $\downarrow$
• C. When car leaves track $\to$, one seconds later $\to$
• D. When car leaves track $\swarrow$, one seconds later $\searrow$
• E. When car leaves track $\searrow$, one seconds later $\nearrow$

Answer 1

The correct option is A When car leaves track $\to$, one seconds later $\searrow$

Horizontal component of the velocity will be same but after one second some velocity in y direction is also generated.

Direction of arrow is direction of net velocity at that time.

So at initial time the direction of arrow will be horizontal because no vertical velocity.

After 1 sec direction of arrow will be some where between positive x and negative y. Because velocity have two component horizontal and vertical downward.

So best possible option is option A.