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Calculate the velocity of an apple at the moment it hits the ground falling from a tree from a height of h = 2.9m
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- A student at the top of a building of height h throws one ball upward with a speed of i and then throws a second ball downward with the same initial speed i. Just before it reaches the ground, is the final speed of the ball thrown upward (a) larger, (b) smaller, or (c) the same in magnitude, compared with the final speed of the ball thrown downward?A celebrated Mark Twain story has motivated contestants in the Calaveras County Jumping Frog Jubilee, where frog jumps as long as 2.2 m have been recorded. If a frog jumps 2.2 m and the launch angle is 45, find (a) the frogs launch speed and (b) the time the frog spends in the air. Ignore air resistance.The height of an average batter is 1.8 m, when a ball is hit it acquires a maximum speed of 50 mill / h. How high above the ground should the roof of a stadium be built so that it just touches the roof
- 3) You throw a ball straight up. The ball leaves your hand at a height of 2.00 m above the ground with a speed of 20.0 m/s (~45 mph). Ignore air resistance and use g = 10.0 m/s2. You can use a spreadsheet but show a sample calculation for the velocity and the position at t = 1.5 s. 3a.) Calculate and make a table of the height, y(t), and y-velocity, vy(t), at 0.50-second intervals until the ball hits the ground. Your table should have the units in the column headers: t (s), vy (m/s), y (m) Remember to add the ysubscripts when the motion is along the y-axis. 3b.) Use this data to draw a motion diagram for the ball at 0.50-second intervals. Label the time, y-coordinate,and the velocity at each time interval. Label the origin, starting height, maximum height, and final height.Include the instantaneous velocity vectors at each time and location of the ball. 3c.) Calculate the time it takes for the ball to hit the ground and the final velocity of the ball just as it hits the ground.…A ball is thrown vertically up with a velocity of 30m/s at the edge of a 60-m cliff. calculate the height to which the ball rises and the total time after release for the ball to reach the bottom of the cliff. Neglect air resistance and use g=9.81m/s2An object slides off a frictionless, horizontal table from a height of 1.40 m above the floor. Itstrikes the floor a distance of 1.88 m from the base of the table.a) Calculate the speed with which the object leaves the table.b) Calculate the velocity (magnitude and direction) of the object just before it strikes the floor.
- More people end up in U.S. emergency rooms because of fall-related injuries than from any other cause. At what speed v would someone hit the ground who accidentally steps off the top rung of a 8.00 ft tall stepladder? (That step is usually embossed with the phrase "Warning! Do not stand on this step.") Ignore the effects of air resistance. Let the +y direction point vertically upward and the origin be on the ground. U = m/s about us careers privacy policy terms of use contact us help 2 tv la MacBook Air 吕0, F3 000 000 F4 F6 F9 F10 F11 % & *A ball was thrown on top of a building, downwards towards the ground. The initial velocity of the ball is 2m/s. If the ball hits the ground 5 seconds after the throw, how tall is the building in meters? Assume that this is a classic free-fall problem.What happens if a person on a cliff throws a rock straight down. To explore this question, calculate the velocity of the rock when it is 5.10 m below, and has been thrown downward with an initial speed of 13.0 m/s -18 m/s -15 m/s -21 m/s
- A tennis player tosses a tennis ball straight up and then catches it after 2.11 s at the same height as the point of release (b) What is the velocity of the ball when it reaches its maximum height? magnitude m/sYou throw an object directly up into the air and then catch it when it comes back down. It hits your hand at a speed of 7 m/s on the way down. What was the initial velocity of the ball? Use a kinematic approach.A rock is tossed from the top of a building at an angle of 20° above the horizontal with an initial speed of 17 m/s. The rock lands on the ground 2.9 s after it is tossed. What is the height of the building (in m)? m
