A speed versus time graph is shown: A Speed versus Time graph is shown with y-axis labeled position in centimeters per second up to 2 and x-axis labeled time in seconds up to 8. A horizontal line connects the points 0, 1 and 4, 1. A vertical line connects points 4, 1 and 4, 0. A horizontal line connects points 4, 0 and 8, 0.

Which statement accurately describes the motion of the object in the graph above?

Group of answer choices

From 4 s to 8 s, the object is at rest.

From 0 s to 4 s, the object is at rest.

At 4 s, the object speeds up to 1 cm/s.

At 4 s, the object slows down to 1 cm/s.

The figure is missing but we can answer anyway.the correct answer is "releasing the string". in fact, when the person is holding the bow and the arrow, the kinetic energy of the arrow is still zero (because the arrow is not moving). the moment the arrow is released, it acquires a velocity v, so its kinetic energy will become different from zero: where m is the mass of the arrow and v its velocity.  all the other options, instead, do not increase the kinetic energy of the system: -  pulling farther back on the string : this will just increase the elastic potential energy of the system-  holding the arrow higher: this will increase the gravitational potential energy of the system (which is given by u=mgh, where h is the height above the ground)-  decreasing the mass of the arrow: this will decrease the gravitational potential energy of the system (which is given by u=mgh, where m is the mass)

Units, mass, direction.