Presentation is loading. Please wait.

Presentation is loading. Please wait.

August 29 AP physics. In: A stone is thrown horizontally with an initial speed of 10 m/s from a bridge. If air resistance could be ignored, how long would.

Similar presentations


Presentation on theme: "August 29 AP physics. In: A stone is thrown horizontally with an initial speed of 10 m/s from a bridge. If air resistance could be ignored, how long would."— Presentation transcript:

1 August 29 AP physics

2 In: A stone is thrown horizontally with an initial speed of 10 m/s from a bridge. If air resistance could be ignored, how long would it take the stone to strike the water 80 m below the bridge? a)1 s b)2 s c)4 s d)6 s e)8 s

3 Objective: To use 2 dimensions to understand projectile motion. Success criteria: Be able to solve projectile problems with horizontal initial velocity

4 Projectile motion

5 Video: Snowmobile projectile Preliminary run Preliminary run –I noticed: Run 1 Run 1 –I noticed: Run 2 Run 2 –I noticed: Run 3 Run 3

6 Horizontal and Vertical directions are independent.

7 Horizontal motion has constant velocity.

8 Vertical motion is freefall motion.

9 Divide and conquer! HorizontalVertical Time crosses the line!

10 Practice: A ball is kicked with a velocity of 20 m/s at an angle of 45 o from horizontal. What is the horizontal and vertical initial velocity?

11 How high will it go?

12 How far will it go?

13 A cannon shoots a cannon ball at 18m/s at an angle of 30 o from the horizontal. What is the distance the cannonball goes?

14 Wiley Coyote slides horizontally off a 100 m cliff at 75 m/s. How far from the base of the cliff will he land?

15 A bullet shoots from a gun at 200 m/s at an angle of 55 o from the horizontal. How long is it in the air? How high will the bullet go? How far will the bullet travel.

16 A man jumps from a burning building 30 meters from the ground. His initial velocity is 10 m/s at 25 o from the vertical. How long did it take him to land? How far away from the building should the firemen hold the net?

17 A tennis player hits a ball from 10 meters away from the net that just barely clears the.75 meter net. His initial velocity was 20 m/s. What was the angle he hit it with?

18 A diver jumps off the 10 meter platform with a velocity of 8 m/s at an angle of 55 o from the horizontal. What were the horizontal and vertical components of her jump. How long does it take her to hit the water?

19 Out: A stone is thrown horizontally with an initial speed of 30 m/s from a bridge. Find the stones total speed when it enters the water 4 seconds later. a)30 m/s b)40 m/s c)50 m/s d)60 m/s e)70 m/s


Download ppt "August 29 AP physics. In: A stone is thrown horizontally with an initial speed of 10 m/s from a bridge. If air resistance could be ignored, how long would."

Similar presentations


Ads by Google