Ch. 3 Test Review

Use the word bank below to complete each sentence

time / horizontal velocity / vertical velocity
complimentary angles / vertical acceleration / 45 degrees
  1. The ______of a projectile is always -9.8 m/s2.
  1. The ______of a projectile is zero at the highest point.
  1. The ______of a projectile is a constant.
  1. ______is the linking variable between horizontal and vertical motion.
  1. Launching objects at ______produces the same range.
  1. Launching an object at ______produces the maximum range.
  1. A pilot drops a package from a plane flying horizontally at a constant speed. Neglecting air resistance, when the package hits the ground the horizontal location of the plane will
  2. be behind the package
  3. be directly over the package
  4. be in front of the package
  5. depends on the speed of the plane when the package was released
  1. A ball is thrown horizontally from the top of a tower at the same instant that a stone is dropped vertically. Which object is traveling faster when it hits the level ground below if neither of them experiences any air resistance?
  2. It is impossible to tell because we do not know their masses
  3. the stone
  4. the ball
  5. Both are traveling at the same speed
  1. In an air-free chamber, a pebble is thrown horizontally, and at the same instant a second pebble is dropped from the same height. Compare the times of fall of the two pebbles.
  2. The thrown pebble hits first
  3. The dropped pebble hits first
  4. They hit at the same time
  5. We cannot tell without which pebble is heavier
  1. Which of the following statements are true about an object in two-dimensional projectile motion with no air resistance?
  2. The speed of the object is constant but its velocity is not constant
  3. The acceleration of the object is +g when the object is rising and -g when it is falling
  4. The acceleration of the object is zero at its highest point
  5. The speed of the object is zero at its highest point
  6. The horizontal acceleration is always zero and the vertical acceleration is always a non-zero constant downward
  1. Which of the following statements are true about an object in two-dimensional projectile motion with no air resistance?
  2. The speed of the object is constant but its velocity is not constant
  3. The acceleration of the object is +g when the object is rising and -g when it is falling
  4. The acceleration of the object is zero at its highest point
  5. The speed of the object is zero at its highest point
  6. The horizontal acceleration is always zero and the vertical acceleration is always a non-zero constant downward
  1. A boat capable of traveling at 4 m/s in still water is aiming itself perpendicularly to a river flowing 3 m/s east. What is the speed of the boat as observed by someone on the shore?
  1. Car A is traveling 50 km/h East and Car B is traveling 30 km/h West.
  2. What is the velocity of car A as seen by car B?
  1. What is the velocity of car B as seen by car A?
  1. A ball is thrown horizontally off a cliff at 12.5 m/s. The cliff is 14.5 meters tall.
  2. Calculate the time it takes for the ball to reach the ground
  1. Calculate the horizontal distance traveled by the ball
  1. A golf ball leaves the tee moving 35 m/s and is moving at an angle of 40 degrees to the horizontal.
  2. Calculate the maximum height reached by the ball
  1. Calculate the time it takes for the golf ball to hit the ground
  1. Calculate the horizontal distance traveled by the golf ball