1. In class problems Type 3 problems Max Height?
Physics Tuesday 10-30
In class problems
Type 3 problems
Max Height?

2. Working on the problems posted in class
1-5

3. Problem #1
A player kicks a football from the ground level with a velocity of magnitude 27.0 m/s at an angle pf 30.0° above the horizontal.
a) find the ‘hang time’, that is the time the ball is in the air.
b) the distance the ball travels before it hits the ground

4. Problem #2
A player kicks a football from the ground level with a velocity of magnitude 27.0 m/s at an angle pf 60.0° above the horizontal.
a) find the ‘hang time’, that is the time the ball is in the air.
b) the distance the ball travels before it hits the ground

5. Problem #3
A beach ball, moving with a speed of m/s. rolls off a pier and hits the water 0.75 m from the end of the pier.
How high above the water is the pier?

6. Problem #4
A shot put is released with a velocity of 12 m/s and stays in the air for 2.0 s.
At what angle with the horizontal was it released?
What horizontal distance did it travel

7. Problem #5
An archer stands 40.0 m from the target. If the arrow is shot horizontally with a velocity of 90.0 m/s, how far above the bulls-eye must he aim to compensate for gravity pulling his arrow downward?

8. Answers Problem #1 a) 2.76 s b)64.5 m Problem #2 a) 4.78 s b) 64.5 nm
a) 55° b) 14m
Problem #5
a) m

9. Challenge problem
A rude tourist throws a peach pit horizontally with 7.0 m/s velocity out of an elevator cage. The elevator is moving upward with a constant velocity of 8.5 m/s velocity.
How long will it take the peach pit to land on the ground, 17.0 m below his initial position?

10. Type 3 problems
Firefighters are using water from hose to put out a fire 13.5 m above the ground. The nozzle of the hose stands 0.75 m above the ground.
If the water comes out 44.5 m/s at 49° above the horizontal, how far away from the building should the firefighters stand?

11. Monster problem #2 The class will create a type 3 problem
Solve on your own for homework

12. Maximum height Occurs at the apex of the arc.
The vertical velocity at that point is _____
Put a third column in chart
Title “max v”
The “d” in the max v column is the max height from surface
If shot off a cliff, add cliff to “max v” d to get height from bottom of cliff

13. H V
Max V a
-9.8 d Vi Vf t