B. Meeting new friends.
Meeting new friends is a sign of happiness, and wanting to expand social life.
D. Increased intake of sodium.
Answer: Stereotype threat
<span>A stereotype threat is a social-psychological
predicament that can alters academic identity and intellectual performance. Negative
stereotypes raise inhibiting doubts and high-pressure anxieties in a
test-taker's mind that result to </span>reduce the performance of individuals.
The mind set of Courtney
that boys do better than girls in math and science would create anxiety, which
will then trigger a mechanism of decreases performance by depleting the working
memory of the brain.
Formula: a = f/m
a = acceleration
f = force
m = mass
Note that the answer will be in m/s so we will need to convert "kg" to "m"
1kg = 1000m
5 * 1000 = 5000 meters
Use what we are given and solve.
a = 25/5000
a = 0.005 m/s
Best of Luck!