8. A ball is thrown into the air - a. entirely vertical. at some angle. At the v

Question

8. A ball is thrown into the air - a. entirely vertical. at some angle. At the very top of the ball's path, its velocity is b. There's not enough information given to determine c. both vertical and horizontal. d. entirely horizontal. 9. In the absence o of air resistance, the angle at which a thrown ball will go the farthest is e. 75 degrees a. 15 degrees. b. 30 degrees. c 45 degrees d. 60 degrees 10. At what part of a path does a projectile have minimum speed? When it returns to the groundAt the There's not enough information to say e. a. top of its path b. Halfway to the top d. When it is thrown 11. A projectile is fired horizontally in a vacum. The projectile maintains its horizontal component of speed because a. has no vertical component of speed to begin with. b. is not acted on by any forces. c. the net force acting on it is zero. d. is not acted on by any horizontal forces. e none of the above 12. After a rock that is thrown straight up reaches the top of its path and is starting to fall back down, its acceleration is (neglecting air resistance) a less than when it was at the top of its path. b. greater than when it was at the top of its path. c the same as when it was at the top of its path. 13 The law of inertia states that an object will continue moving at the same velocity unless an outside force acts on it. b. a. will continue moving in a straight line unless an outside force acts on it. that is not moving will never move unless a force acts on it. c. d. e. at rest will remain at rest unless acted on by an outside force. will do all of the above. 14. One object has twice as much mass as another object. The first object also has twice as much a. velocity b. gravitational acceleration. c. inertia. d. all of the above 15. Friction a comes from microscopic bumps that act as obstructions to the object's motion. b. is the name given to the force acting between surfaces sliding past one another. c. acts in a direction that opposes the motion of an object d. all of the above e none of the above

Explanation / Answer

8) at the very top , Velocity will be zero

9) the angle will be 45 degree

10) minimum speed will be at the top

11) because there is no net force in horizontal direction

Related Questions

Navigate

• Browse (All)
• Browse 8
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.