Answer:
Projectile motion is a form of motion where an object moves in a bilaterally symmetrical+ parabolic path.
Explanation:
Answer: B. A gravitational field
Explanation:
Surrounding earth is gravitational field. Gravitational field is a region of space were gravitational force can be felt and gravitational force is the gravitational pull on the surface of the earth. The presence of this gravity is what allow us to be able to walk freely without falling. It also make us jump up and be able to land back on the ground. Assuming there are no force of gravity in the surface of the earth, there won't be any possibility of landing back on the ground after jumping.
Remember, Your electric field lines drawn from positive charge (protons) and goes to negative charge (electron)
So, Your Answers would be:
15) B) Positive
16) A) Negative
17) B) Positive
18) A) Negative
19) B) Positive
20) B) Positive
Hope this helps!
