i added an image. i hope it helped :)
D) Yes. Even though the initial and final velocities are the same, there is a change in direction for the ball.
Acceleration (a) = change in velocity (v) over time (t), let's consider moving right is (+) and moving left is (-)
a = (vf - vi)/t = (-5 - +5)/t
a = (-10)/t
So even though the number looks the same from vi to vf, there actually is a negative acceleration of 10m/s/s.
Answer:
Part 1. Pendulum clock is slower.
Part 2. Spring-loaded clock remains the same.
Explanation:
The period of a simple pendulum is given by
where 
= length of pendulum and 
= acceleration due to gravity.
It is seen that the period is inversely proportional to the square root of the gravitational acceleration. So if gravity increases, period decreases and vice versa.
on the moon is about one-fifth that of the Earth. Hence, the pendulum will have a larger period, about twice (
). A larger period means it takes longer to finish an oscillation, so the pendulum clock is slower.
The period of a loaded spring is given by
where 
= the spring constant and 
= mass of load on the spring.
It is seen that this relation does not depend on gravity nor does it have any parameter that depends on gravity: k is a constant of the spring that does not change while mass is independent of location.
Hence, the spring-loaded clock will remain the same.
As a note, one might assume that gravity affects the loaded spring because the load is 'pushed' down by gravity. In fact, only the equilibrium position is affected by gravity; it only determines where the oscillation starts from, not how long it takes.
The following are the answers:
1. B.<span>reduces pesticide residues.
> It reduces pesticide residues up to 50%. It also does not increase the amount of fat in beef because, corn, like wheat and grain, are high starch or high energy food, which would mean that, it reduces the time to fatten the cattle.
2. </span>B. Antimicrobial drugs should be limited to situations where the use of drugs is necessary for animal health.
> Improvement in management and animal health care have largely improved safety of food and as an outcome, decreased the need for antimicrobial in the system of food production.
3. A. 7
>A meta-analysis of 2012 identified that pesticide residues were found in 7% of organic produce samples, 38% conventional produce samples.<span>
4. </span><span>D. Raw shellfish from polluted water
> One way of getting Hepatitis A is eating contaminated food.
5. </span><span>B. Toxoplasma gondii
> Sources of infection of T.gondii is </span><span>contact with contaminated cat feces.
6. </span><span>Methyl mercury
7. </span><span>B. botulism infection.
> mainly caused by </span><span>botulinum toxin.
8. </span><span>D. E. coli
</span>
