Question

In: Physics

You are to fire a cannon and are trying to hit a target 300 meters due...

You are to fire a cannon and are trying to hit a target 300 meters due east of your current position. Your cannon fires projectiles with a mass of 2 kg and with an initial speed of 60 m/s. Gravity is pulling the projectile downward at an acceleration of 9.8 m/s2. There is a wind blowing from the north pushing the projectile southward with a force of 3 N. What is the angle θ up from the ground you must aim the cannon, and what is the angle φ the direction you must turn the cannon to the north? There is a large ridge between the cannon and the target, so your angle of inclination θ must be greater than 45 degrees. Use the acceleration vector given by the wind and gravity, the initial velocity, and the initial position (the origin), to find a position function for the projectile. This will depend on t, θ, and φ. Once you have this function, solve for t, θ, and φ.

,

.

Solutions

Expert Solution


Related Solutions

You are testing a new t-shirt cannon. You decide to fire the t-shirts vertically straight up...
You are testing a new t-shirt cannon. You decide to fire the t-shirts vertically straight up in the air so that you do not have to walk to pick up the launched t-shirts. First, a green t-shirt is launched vertically upwards with a speed of 12 m/s. Exactly 1.0 s later, a blue t-shirt is launched vertically upwards with a speed of 18 m/s. At what time (after the launch of the first green t-shirt) will the two shirts collide,...
A bullet will hit a target which is a circle with radius of 20 meter. If...
A bullet will hit a target which is a circle with radius of 20 meter. If the bullet assumed hit the circle and the probabilty of it to hit all points in the circle is the same. What is the probability of the bullet to hit the target at the area with the distance of 2 meter from the center of the circle to the west and east AND 3 meter from the center of the circle to the north...
Amy and bob are in an archery competition. the goal is to hit a target taht...
Amy and bob are in an archery competition. the goal is to hit a target taht is on a wall 50m away from them horizontally. the target is 21m vertically above the ground, and both competitors hold their bows 1m above the ground, so the vertical displacement is 20m. they both use the same bow, which shoots arrows at a speed of 35 m/s at the moment of release. A) Bob decides to aim directly at the target. what angle...
(A) Three marksmen fire simultaneously and independently at a target. What is the probability of the...
(A) Three marksmen fire simultaneously and independently at a target. What is the probability of the target being hit at least once, given that marksman one hits a target nine times out of ten, marksman two hits a target eight times out of ten while marksman three only hits a target one out of every two times. (B) Fifty teams compete in a student programming competition. It has been observed that 60% of the teams use the programming language C...
A Baseball coach was trying to predict the number of RBIs players hit based on the...
A Baseball coach was trying to predict the number of RBIs players hit based on the amount of time they spend in the batting cage. Assuming the slope (or change in DV for every change in the IV) is 5 and the Y intercept is 10, what will the predicted RBI total be for player 1 who spent 12 hours in the batting cages compared to the predicted RBI total for player 2 who spent 4 hours in the batting...
Alvin throws darts at a circular target of radius r and is equally likely to hit...
Alvin throws darts at a circular target of radius r and is equally likely to hit any point in the target. Let X be the distance of Alvin's hit from the center. (a) Find the PDF, the mean. and the variance of X. (b) The target has an inner circle of radius t. If X ? t, Alvin gets a score of S = 1/ X. Otherwise his score is S = O. Find the CDF of S. Is S...
You are trying to construct a mimicking portfolio using 3 assets. The target Beta on your...
You are trying to construct a mimicking portfolio using 3 assets. The target Beta on your portfolio is -1.5. Asset 1 has a beta of 0, Asset 2 has a Beta of 1 and Asset 3 has a Beta of 2.5. You are required to hold 10% of your mimicking portfolio in Asset 3. The resulting weights for the other two assets in the mimicking portfolio are w(asset 1) = _________ % and w(asset 2) = _______%
A 300 kN point load is applied to a soil profile that consists of 7 meters...
A 300 kN point load is applied to a soil profile that consists of 7 meters of sand (γt = 19 kN/m3) above 4 meters of clay (γt = 17.5kN/m3) with the groundwater table at a depth of 5 meters. The clay has an OCR = 1.6, an initial void ratio of 0.86, a Cc=0.64 and a Cr=0.12. The sand has a Cc = 0.35 and an initial void ratio of 0.68. Calculate the overall settlement of the profile due...
You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon...
You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 20000 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 1.84 m and the cannon is aimed at a 50◦ angle from the ground. (1)The acceleration of gravity is 9.8 m/s2 . If Dread Pirate Roberts tells you he wants the ball to leave the cannon with...
A baseball player has a .300 batting average; (he gets a hit in 30% of his...
A baseball player has a .300 batting average; (he gets a hit in 30% of his total “at-bats” (opportunities)). In a particular week, he will have a total of 20 at-bats. Assume that two outcomes are possible at each at-bat, a hit or an “out”. Also, assume that the probability of a hit is constant and that the at-bats are independent. a. What is the expected number of hits for the week? b. What is the probability that he gets...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT