Skier leaves the ramp at an angle of 25° at A and hits the slope at B. Find the skier's initial speed VA Tip: Establish a fixed x-y coordinate system at A. Apply the kinematic relations in X and Y directions.
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- Please answer this question. An airplane releases a ball as it flies parallel to the ground at a height of ℎ=245 m as shown in the figure. If the ball lands on the ground a horizontal distance equal to the height ℎ from the release point, calculate the speed ? of the plane. Neglect any effects due to air resistance, and use ?=9.81 m/s2 for the acceleration due to gravity.Sto SKILL LEVEL: To be determined An arrow is fired downward at an angle of 45 degrees from the top of a cliff with a velocity of 60.0 m/s. How far from the base of the cliff will the arrow land if it is in the air for 3 seconds before striking the ground? a 115 m b 127 m C 135 m Check itA golfer hits a ball with an initial speed of 30.0 m/s at an angle of 50.0oabove the horizontal. The ball lands on a green that is 5.00 m above the level where the ball was struck. a) How long is the ball in the air? b) How far has the ball traveled in the horizontal direction when it lands? c) What is the speed and direction of motion of the ball just before it lands?
- A projectile is launched at ground level with an intial vertical velocity of 25.0m/s and a horizontal velocity of 43.3m/s. It strikes a target above the ground 3.00 seconds later. a) How high is the target above the gound? b) How far did the projectile travel before hitting the target? c) What is the horizontal component of the velocity of the projectile right as it hits the target? d) What is the vertical component of the velocity of the projectile right as it hits the target?An arrow is launched from ground level, with an initial speed of 27.2 m/s at an angle of 31.4° above the horizontal. Neglect air resistance, and take upward as the positive direction. a) How much time is needed for the arrow to reach its maximum height, b) what is this maximum heightc) how long does it take to land on the ground againd) how far does it travel right before it lands.Which statements are NOT VALID for a projectile? Take upward as positive. The acceleration of the projectile is positive and decreasing when the projectile is moving upwards, zero at the top. and increasingly negative as the projectile descends. OThe projectile has the same x velocity at any point on its path. O The acceleration of the projectile is a constant negative value. The y component of the velocity of the projectile is zero at the highest point of the projectile's path.
- looking for A and BA ball is thrown downward from the top of the building with a speed of 18.0 m/s at an angle of 30.0° to the horizontal. a) What are the horizontal and vertical components of the velocity the instant the ball is thrown? b) What are the horizontal and vertical components of the velocity 1.00 s after being thrown?1. The distance between home plate and the pitcher's mound in baseball is 60.5 ft. In MLB, baseballs are. pitched at about 90mph. Assume the ball is thrown perfectly horizontally, at 0°. How far in feet will the ball drop during its transit to home plate? Use g = 32 ft/s². (Note: this is why pitcher's mounds are raised.) 2. A pebble is tossed into the air at an angle of 62° above the horizontal, with an initial speed of 4.8 m/s. The pebble is 1.6m above the ground when it is released by the thrower's hand. a) How long will the pebble remain airborne? b) What maximum height above the ground will the pebble achieve?
- The maximum horizontal distance a boy can throw a ball is 50 m. Assume he can throw with the same initial speed at all angles. How high does he throw the ball when he throws it straight upward?You shoot an arrow into the air at an initial velocity of 22.5 m/s at an angle of 40 degrees. a) Find the maximum height the arrow reaches in the air. b) Find the time it takes to reach its maximum height. c) Find the time it takes to hit the ground. Assume its flight in the air is symmetrical, with the first half of flight traveling upward, and the 2nd half of the flight traveling downward. Assume no air resistance. d) Find how far away it hits the ground.Lesson: Projectiles When there is air resistance present how to the velocity and acceleration vectors behave? O The acceleration vector is perpendicular to the trajectory and the velocity vector is at a tangent to it. O The acceleration changes throughout the flight with its x-component opposite the direction of motion. The velocity vector is at a tangent to the trajectory O The acceleration vector is constant and points straight down. The velocity vector is at a tangent to the trajectory O The acceleration and velocity vectors are both constant magnitude but continually change direction.