19) suppose that a car traveling to the east (+x direction) begins to slow down as it approaches a traffic
light. which statement concerning its acceleration must be correct?
a) its acceleration is in the -x direction.
b) its acceleration is zero.
its acceleration is decreasing in magnitude as the car slows down.
d) its acceleration is in the +x direction.

C) Its acceleration is decreasing in magnitude as the car slows down.

Explanation:

According to the described situation the car's final velocity is less than its initial velocity, this means the car's velocity decreased as it slows down.

On the other hand, acceleration is defined as the variation of velocity in time:

If the car's velocity decreases, its acceleration is negative.  Hence, the acceleration is decreasing in magnitude as well.

the given statement is true.

sensory memory lasts for a fraction of seconds before the information is lost. it is the shortest -term memory and can be called as an element of memory. example: when we look at something and remember what it looks like, is just a second of observation. it degrades very quickly. it can also be considered as the process of perception rather than considering it as a memory.