hi, i need answers on the questions below. please provide explanation or solution if needed so i can better understand it, thank youu!

7. If the body is under uniformly accelerated motion, which of the following is constant? A. Speed B. Velocity C. Acceleration D. Force E. No Answer 8. You rode a roller coaster with a loop 100 meters in height. What is the acceleration due to gravity at the top of the loop? A. 9.8 m/s^2 B. -9.8 m/s^2 C. O D. -19.6 m/s^2 E. No answer 9. A motorcycle started from rest is moving at a constant acceleration of 10 m/s^2 for 10 s. What is the total displacement travelled? A. 100 m B. 500 m C. 1000 m D. 2000 m E. No Answer10. A ball was thrown upward with an initial velocity of 10 m/s. What is the velocity of the ball once it goes back to the owner's hand? Assume air resistance is negligible. A. 0 B. 10 m/s C. -10 m/s D. -20 m/s E. No Answer 11. An object is moving to the right with a constant acceleration pointing to the left. The velocity of the object increases. True or False? 12. When you drop any object, it is always exhibiting a free fall motion. True or False? A paraglider started to descent in his wingsuit. Knowing that air resistance will be significant to make the paraglider to be safe, which of the following will happen to its acceleration and velocity vectors? A. Acceleration decreases while velocity increases B. Acceleration increases while velocity increases C. Acceleration constant while velocity decreases D. Acceleration increases while velocity decreases E. No