1. In a game war, one team sets based on a cliff 15m and 60m away from the base of the opponent. At what velocity must the attack be launched so that the lower base will be hit? The initial launch is at 20 degrees below the horizontal. If the attacking team launches their attack with velocity of 10 m/s, at what angle and manner should the attack be done?

1. In a game war, one team sets based on a cliff 15m and 60m away from the base of the opponent. At what velocity must the attack be launched so that the lower base will be hit? The initial launch is at 20 degrees below the horizontal. If the attacking team launches their attack with velocity of 10 m/s, at what angle and manner should the attack be done?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter4: Motion In Two Dimensions

Section: Chapter Questions

Problem 4.66AP: A cannon with a muzzle speed of 1 000 m/s is used to start an avalanche on a mountain slope. The...

See similar textbooks

Similar questions

Dominic dashes forawrd as quickly as he can. When he reaches a white line, he jumps with a launch velocity of 5.64 m/s at 25.0 degrees. A) What is Dominic's velocity 0.243 seconds after his jump? B) How far has Dominic moved horizontally in 0.243 seconds? C) What is Dominic's velocity 0.486 seconds after his jump?
A cannon shoots a a large cannonball. The cannonball has a intital speed of 125 m/s. If the elevation angle was 32., what is the horizontal distance that the cannonball travel?
Calvin is standing on the roof of a 6.50 m tall house. His tiger Hobbes is on the ground, some distance away from the house. Calvin is throwing water balloons at Hobbes: Calvin is throwing the water balloons with speed VO at an angle of 0 below the horizontal. On his first try, Calvin hits Hobbes with the water balloon! Hobbes is 3.02 m horizontally from the base of the building and it takes 1.04 s for the balloon to hit him. Coordinate system: positive x points to the right and positive y points up.
.A body is projected downward at an angle of 30° with the horizontal from the top of a building 170m higri. ts initial speed is 40m/s. a. How long will it take before striking the ground? b. How far from the foot of the building will it strike? C. At what angle with the horizontal will it strike?
Hanamichi Sakuragi has a height of 190 cm. He is about to make a shot in the 3-point line which is 7.5 m away from the basketball ring. If he shoots the ball without jumping and with his hand is 50 cm above his head and the angle of his shot is 45° from the horizontal. (Assume that the height of the ring is 3.05 m from the floor.) a. What must be the shot's velocity in m s- to make a 3-point shot? b. If Captain Akagi is 1.5 m away from the basketball ring and he has a standing reach of 260 cm. What must be the elevation of his vertical jump to block Sakuragi's three pointer shot?
the court is the tennis ball when it leaves the racket? Ans: 1.83 m SUL des Bud Question 3. A marble is thrown horizontally with a speed of 19.2 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle of 39° with the horizontal. From what height above the ground was the marble thrown? Ans: 12.33 m lage vob Y Question 4. A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 640 the hullot strikes the target.
A flare is shot horizontally from a flare gun located 60.0 m above the ground. Theflare’s speed as it leaves the gun is 200 m/s. Neglect wind resistance. a) What horizontal distance does the flare travel before striking the ground?b) What is its speed immediately before striking the ground? c) If the projectile were simply dropped from 60.0 m, instead of fired horizontally fromthat height, how much time would it take to reach the ground? How does this compare with the time it took to hit the ground in part (a)? Why?
. Prove that the trajectory of a projectile is parabolic, havingthe form y = ax + bx2. To obtain this expression, solve theequation x = v0xt for t and substitute it into the expressionfor y = v0yt – (1 / 2)gt2(These equations describe the xand y positions of a projectile that starts at the origin.) Youshould obtain an equation of the form y = ax + bx2 wherea and b are constants
A student ires a canonball with a speed of 35.0m/s from a height of 50.om/s at an angle of 62 degrees. How long did the ball remain in the air ? How far from the base of the building did the ball land? How fast was the ball moving as it struck the ground?
A football played runs for a distance d1=7.32 m in 1.07 s at an agle of 44.4 degrees. Then turn left and runs a distance d2= 10.62 m in 1.45 s. What is the total displacement in meters? What angle, in degrees does the displacement make with the y-axis? What is the magnitude of the average velocity in m/s? What angle, in degrees, doese the average velocity make with the y-axis?
How long does it take when the ball lands at the height of 1.6m?
You are attacking your enemy’s castle and prepare your catapult to launch a large stone at the castle wall. Asyour clan’s engineer, it is up to you to calculate the correct distance from the wall to fire your catapult. Youknow that the projectile will be launched from the catapult 8.2 m above the ground at a velocity of 40 m/s atan angle of 46◦ above the horizontal, and you want to hit the castle wall 3.0 m above the ground, where theprojectile will do the most damage. How far from the wall should your catapult be positioned?