Chapter 5: Projectile Motion Part 2 (5.3 - 5.5)

SC.912.P.12.2 Analyze the motion of an object in terms of its position, velocity, and acceleration.

BELLWORK: Preview video HERE.

In Class reading of 5.3- 5.5

1. Complete the sentence: Any vector can be resolved or broken, into an equivalent set of two __________ vectors at right angles to each other.
2. Determine if the following statement is true or false: Component vectors are always at right angles to each other.
3. Determine if the following statement is true or false: The two components of a vector are independent of each other.
4. Complete the sentence: A ball in thrown into the air at an angle. The velocity of the ball can be resolved into _____________ and ___________ components.
5. Decide which statements are true about projectiles:
1. A projectile moves through are or space.
2. A projectile is always subject to at least 2 forces.
3. A projectile is subject to the force of gravity.
4. A projectile in air is subject to air resistance.
6. Determine if the following statement is true or false: For a projectile, the horizontal component of its motion is like the horizontal motion of a ball freely rolling on a level surface without friction.
7. Complete the sentence: The ______________ component of velocity for a projectile always changes with time.
8. Determine which word best describes the relationship between the vertical and horizontal components of velocity for a projectile: equal, opposite, independent, or constant.
9. Determine if the following statement is true or false: Ignoring air resistance, the horizontal component of velocity of a horizontally launched projectile remains constant.
10. A ball is dropped off the edge of a desk. Another ball rolls off the desk at exactly the same time. Determine which word best describes the vertical component of the velocity of the balls: equal, opposite, zero, or constant.
11. Decide which statements are true about a horizontally launched projectile:
1. Gravity acts on the projectile.
2. Ignoring air resistance, horizontal motion is contant.
3. The projectile accelerates downward.
4. The vertical motion is the same as a freely falling object.
12. Determine which word best describes the path followed by a ball that rolls off the edge of a desk: straight, circular, curved, or horizontal.
13. Complete the sentence: The path of a projectile with constant horizontal motion and a downward acceleration due to gravity is a(n) _______________.
14. A boy drops a rock off a cliff at the same time that his sister throws another rock horizontally from the cliff. Decide which statements about the 2 rocks are true.
1. Gravity acts on both rocks.
2. Both rocks hit the ground at the same time.
3. Both rocks accelerate horizontally and vertically.
4. Both rocks follow parabolic paths.