A ball is shot from a compressed-air gun at twice its terminal speed. Part A What is the magnitude of the ball's acceleration when it leaves the gun, as a multiple of g, if it is shot straight up? Part B What is the magnitude of the ball's acceleration when it leaves the gun, as a multiple of g, if it is shot straight down?
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- Part A In the winter sport of bobsledding, athletes push their sled along a horizontal ice surface and then hop on the sled as it starts to careen down the steeply sloped track. In one event, the sled reaches a top speed of 9.2 m/s before starting down the initial part of the track, which is sloped downward at an angle of 9.0°. What is the sled's speed after it has traveled the first 120 m? Express your answer with the appropriate units. HA ? Value vf %3D UnitsO7A child on a bridge throws a rock straight down to the water below. The point where the child released the rock is 94 m above the water and it took 1.2 s for the rock to reach the water. Determine the rock's velocity (magnitude & direction) at the moment the child released it. Also determine the rock's velocity (magnitude & direction) at the moment it reached the water. Ignore air drag.
- The vertical axis of these plots can be x, v or a. Assume acceleration is constant. Choose from the curves to depict a particle that starts at the origin with initial speed, moving in the negative ×-direction and slowing down.Falcons are excellent fliers that can reach very high speeds by diving nearly straight down. To pull out of such a dive, a falcon extends its wings and flies through a circular arc that redirects its motion. The forces on the falcon that control its motion are its weight and an upward lift force—like an airplane—due to the air flowing over its wings. At the bottom of the arc, as shown, a falcon can easily achieve an acceleration of 15 m/s2. Suppose the falcon weighs 8.0 N and is turning with an acceleration of 15 m/s2 at the lowest point of the arc. What is the magnitude of the upward lift force at this instant?A. 8.0 N B. 12 NC. 16 N D. 20 NT3.23 Please help me answer this physics question.
- Consider a skier heading down a 11° slope. Assume the coefficient of friction for waxed wood on wet snow is μk = 0.10 and use a coordinate system in which down the slope is positive. a. Calcuate the magnitude of the acceleration of the skier in m/s2 b. Find the angle, in degrees, of the slope on which this skier could move down the slope at constant velocityAsap plzzzzYou throw a ball on planet X where g is not the same as on Earth. The figure below shows the vertical velocity of the ball after it leaves your hand. Air resistance is not important. v(m/s) 18.0 12.0 6.0 -6.0 -12.0 -18.0 1.0 2.0 3.0 t(s)
- A ball is kicked from the ground at an angle of Q = 51 degrees with respect to the horizontal. The ball is in the air for a time tm = 1.1 s before it lands back on the ground. a. Numerically what is the total horizontal distance dm in meters, travelled by the ball in the time tm?A rocket is launched at an angle of 60.0° above the horizontal with an initial speed of 95 m/s. It moves for 3.00 s along its initial line of motion with an acceleration of 32.0 m/s2. At this time its engines fail and the rocket proceeds to move as a free body. a. Find the maximum altitude reached by the rocket. _______m b. Find its total time of flight. _______ s c. Find its horizontal range _______ mAn airplane is moving sideways at a constant pace, and drops two packages. Package #1 is light, while package #2 is heavy. For this problem, ignore air resistance. Package(s) will reach the ground first? Package 1 will land in front of below or behind or beside the plane, and package 2 will land in front of below or behind or beside the plane. Package 1 will land in front of below or behind or beside the other package?