## In this web quest you will refine your understanding of the behavior of horizontally launched objects. You must complete each section. Read the directions for each section then follow them.

Part One - You have already done this part. Skip to Part Two.

Directions: After clicking on the link below, copy questions 1 - 4. Leave about 3 lines between each question for your response. Click on the following link: http://physicsquest.homestead.com/quest3n.html

Part Two

Copy the questions then use the figure below to answer them.

1) How do the verticle velocities of the two trajectories compare?

2) How does the acceleration of the two balls compare?

3) How does the yellow ball's horizontal motion affect its vertical motion?

4) How do you know the vertical velocity of both balls is greater near the bottom of the figure than it is at the top of the figure?

Part Thee: Problems

Solve the follwing problems.

2) Tony is eating an apple while riding on his skateboard. When finished with the apple, Tony drops the apple core from 1.5 m above the ground while traveling along the sidewalk at 3 m/s. How far horizontally from the initial dropping point will the apple core hit the ground?

3) A person throws a stone with a speed of 15 m/s off a cliff that is 30 m high. How long does it take for the stone to hit the ground?

4) An object rolls off a table and hits the ground 2.5 seconds later. How fast is it moving (vertically) by the time it reaches the ground?

5) A projectile was given an horizontal velocity of 3 m/s and hits the ground with a final speed (Vf) of 7.8 m/s. Calculate the following:

a) Vyf

b) the time the projectile was in the air

c) the height from which the projectile fell

d) the horizontal distance the projectile traveled.

Solve the follwing problems.

**Show all work (list given, write equation, plug numbers into equation, provide an answer with a unit) for all problems.**

1) An autographed baseball rolls off of a 1.4 m high desk and stikes the floor 0.81 m away from the desk. How fast was it rolling on the desk before it fell?2) Tony is eating an apple while riding on his skateboard. When finished with the apple, Tony drops the apple core from 1.5 m above the ground while traveling along the sidewalk at 3 m/s. How far horizontally from the initial dropping point will the apple core hit the ground?

3) A person throws a stone with a speed of 15 m/s off a cliff that is 30 m high. How long does it take for the stone to hit the ground?

4) An object rolls off a table and hits the ground 2.5 seconds later. How fast is it moving (vertically) by the time it reaches the ground?

5) A projectile was given an horizontal velocity of 3 m/s and hits the ground with a final speed (Vf) of 7.8 m/s. Calculate the following:

a) Vyf

b) the time the projectile was in the air

c) the height from which the projectile fell

d) the horizontal distance the projectile traveled.