2 Beach Fun You Shoot A Cannon Ball From A Beach Into The Sea The Toy Cannon Stands In A Little Well So That The Ba 1 (68.33 KiB) Viewed 23 times
#2 Beach fun You shoot a cannon ball from a beach into the sea. The (toy) cannon stands in a little well, so that the ball is shot from a height of 2 m below the sea level, and from 2 m away from the shore (here, that is the straight line the water forms with the beach). Make a sketch and introduce a proper coordinate system! The ball starts with an angle of 50° with the ground (which is parallel to the sea surface), the initial velocity is 20 m/s. At which distance to shore and under which angle does the cannon ball hit the water? How high did it fly? How far away is its resting point on the ground if the sea is 10 m deep? Assume that the motion is not affected by the water at all. You repeat the above experiment exactly, but use a fireworks projectile of 250 g mass instead of the cannon ball. It explodes exactly at the top of the trajectory into six identical pieces, releasing an energy of 4.5 J. One of the pieces starts with an initial flight direction exactly parallel to the water surface towards the cannon. Find the distance of the projectile to shore when it hits the water. Hint: If you could not solve the height initially, use h = 22 m instead, and a distance d = 18 m of the maximum position to shore).
Sketch Distance of resting point Initial velocity vector Velocity of projectile 14 Time of flight Distance to shore Velocity vector when hitting the water 15 12 Distance of projectile when hitting the water 15 Points Angle Height 14 12 16
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