Answer:
-8 Kgm/s
Explanation:
From conservation of linear momentum, the sum of momentum before collision is equal to the sum of linear momentum after collision
The sum of momentum before collision is 15+-35=-20 Kgm/s
Momentum after collision is
x+-12=-20
x=-20+12=-8 Kgm/s
Answer:
True
Explanation:
J. Henry Alston was known as a famous African American psychologist. He was known through his detailed study of the sensations of heat and cold which is a necessity for all humans.
He however became the first African American to publish his research findings on the perception of heat and cold in a major US psychology journal which gave him recognition in his field.
Answer:
B
Explanation:
It's Scientifically proven
Are breathing hard. This is because cardiovascular exercise makes the heart beat faster which in turn creates a need for more air.