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?1 s2 s4 s6 s8 s
3 Objective: To use 2 dimensions to understand projectile motion. Success criteria:Be able to solve projectile problems with horizontal initial velocity
13 A cannon shoots a cannon ball at 18m/s at an angle of 30o from the horizontal. What is the distance the cannonball goes?
14 Wiley Coyote slides horizontally off a 100 m cliff at 75 m/s 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 55o 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 A man jumps from a burning building 30 meters from the ground. His initial velocity is 10 m/s at 25o 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 55o 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 stone’s total speed when it enters the water 4 seconds later.30 m/s40 m/s50 m/s60 m/s70 m/s