The macromolecule that is made up of subunits that are called amino acids are the protein. The answer is therefore letter D. The carbohydrates are made up of subunits called monosaccarides. The lipids are mades up of subunits referred to as the fatty acid while nucleic acid are made up of nucleotides.
Answer:
the velocity (magnitude and direction) of the ball) just before the collision is
The velocity (magnitude and direction) of the ball) just after the collision is 
Explanation:
According to the law of conservation of energy;


Thus; the velocity (magnitude and direction) of the ball) just before the collision is
Since, Air resistance is negligible, and the collision is elastic.
The equation for the conservation of momentum and energy can be expressed as:
![v_f = [\frac{m_1 -m_2}{m_1+m_2}]v_i\\\\v_f = [\frac{m_{ball} -m_{block}}{m_{ball}+m_{block}}]v_i\\\\v_f = [\frac{1.6 -2.5}{1.6+2.5}]*5.144\\\\](https://tex.z-dn.net/?f=v_f%20%3D%20%5B%5Cfrac%7Bm_1%20-m_2%7D%7Bm_1%2Bm_2%7D%5Dv_i%5C%5C%5C%5Cv_f%20%3D%20%20%5B%5Cfrac%7Bm_%7Bball%7D%20-m_%7Bblock%7D%7D%7Bm_%7Bball%7D%2Bm_%7Bblock%7D%7D%5Dv_i%5C%5C%5C%5Cv_f%20%3D%20%5B%5Cfrac%7B1.6%20-2.5%7D%7B1.6%2B2.5%7D%5D%2A5.144%5C%5C%5C%5C)

The velocity (magnitude and direction) of the ball) just after the collision is 
Answer:
the net force will be 50 N Up
Explanation:
because left and right forces balance each other and by calculating up and down forces , force exerting upward is 50 more than down .
hence, net force is 50N Up
If a food worker realizes that food is being kept at the incorrect temperature, he or she should immediately report it to their manager and politely request the customer to allow them some time to remake their order because it has been messed up.
The USFDA requires that hot foods should be held at 57 °C (135 °F) or above in order to ensure safety.