# Physics

Assume you are a medieval knight attacking a castle with a canon. The ball leaves the cannon with a speed of 34.9 m/s. The barrel's angle with respect to the ground is 39.5 deg, and you make a perfect hit on the tyrant's chamber which is at the same level as the cannon's muzzle (H=0). What is the time of flight of the cannon ball?

1. 👍
2. 👎
3. 👁
1. I will be happy to critique your thinking.

1. 👍
2. 👎
👤
bobpursley
2. Projectile motion equation:
y=xtan(è)-(gx^2)/[2(ucos(è))^2] where
è=39.5 deg., u -34.9 met/sec & g=9.8 met/sec^2. On substitution and solving for y=0, you can get the horizontal range as 122.003 met. and thus the time required would be = 122.003/(ucos(è))=4.53043 sec.

1. 👍
2. 👎

## Similar Questions

1. ### English

i read this story today and need help with few questions. sorry it a bit long. i actually not real understand it, especially ending. THE WHITE KNIGHT by Eric Nicol Once upon a time there was a knight who lived in a little castle

2. ### Physics

A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.81 m from the end of the track after falling a vertical distance h2 =

3. ### physics

Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 35 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters

4. ### English

The story 'The White Knight' explores the theme the importance of self-awareness?with reference to the story. So the white Knight stole some buns,ravished the girl,replaced his horse and killed the other white knight...so he

1. ### physics

5) After catching the ball, Sarah throws it back to Julie. The ball leaves Sarah's hand a distance 1.5 meters above the ground, and is moving with a speed of 22.0 m/s when it reaches a maximum height of 9.0 m above the ground.

2. ### physics

A baseball leaves the bat with a speed of 44.0 m/s and an angle of 30.0 above the horizontal. A 10.0-m-high fence is located at a horizontal distance of 132 m from the point where the ball is struck. Assuming the ball leaves

3. ### History

Which accurately describes a similarity between medieval Japanese culture and medieval European culture? japan and Europe used a form of representative democracy during the middle ages Japanese samurai and European knight shared

4. ### Physics

A penny rests on top of a bowling ball. You give the bowling ball a slight bump and the penny slides off the frictionless, spherical surface as shown below. At what angle θ does the penny leave the surface of the bowling ball?

1. ### English

In which of the following sentences is the phrase underlined? A.I helped my younger brother build a sand castle at the beach(my answer) B. My brother dug a giant hole using only a small pail shovel. C. After we built a sand

2. ### math

A golfer hits a ball. The ball leaves the club with an initial upward velocity of 40 meters per second. If the ball is 0.25 meters off the ground when it leaves the golf club, about how many seconds will it take for the ball to

3. ### cletion

the castle is in the shape of a rectangular prism. the length is 25 feet long 157 feet wide. the height of the castle measures 38 feet. what is the surface area of the castle? what is the volume of the castle?

4. ### PHYSICS

Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 57 cm above the ground at an angle of 80° with respect to the vertical. (a) The speed of the ball as it leaves the