Read the real-world situation and substitute in values for the projectile motion formula. Then solve the resulting quadratic equation by factoring to answer the question. How long does it take a rock to hit the ground if thrown off the edge of a 72 foot tall building roof with a downward velocity of 24 feet per second? The rock lands seconds after it is thrown.
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A: Solution: given that u = 10 m/s v = 30 m/s distance s = 133 m
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A: Initial vertical velocity of ball = 20m/s Acceleration due to gravity = 9.81m/s2
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- I am currently learning about kinematics in my physics class. For one of the questions, it asks me to solve a question that asks me to find the magnitude of acceleration. I have found answers ranging between 3 and 4, but everytime I put my answer into Webassign it is wrong. I was wondering how I would find the magnitude of acceleration given the time and distance. Thank youCities A and B are connected by a straight road of total length 200 miles.Two cars depart cities A and B at the same time, moving towards each other. The A-car travels at 60 miles per hour, and the B-car at 40 mph. At the same time, a fly starts off from the front bumper of the A-car flying at 100 mph. It flies towards city B until it touches the bumper of the B-car, and then flies back, touches the A-car, flies back, etc, until the cars collide and the fly is squashed. The standard trick question is - what is the total distance traveled by the fly? At first sight one would think that the problem should be solved by the series summation, but that’s not necessary - the cars meet after 2 hours, and during that time the fly traveling at 100 mph covers exactly 200 miles. Now that you know the answer, solve this problem using the series summation [1].A student fires a cannonball vertically upwards with a speed of 39.0m/s. Determine all unknowns and answer the following questions. Neglect drag and the initial height and horizontal motion of the cannonball. What was the cannonball's maximum height? unit How long did the cannonball rise? unit What was the cannonball's total flight time? unit check answers cannot be de Unit 12: forces and motion review, one-dimensional motion problems Desmos Scientific Online Calculator
- The last part of YOUR lab (Part 3) is NOT covered in the video. It is, however, exactly like second part of the "Bull's Eye" lab where you predicted where the ball would land. If, after you complete Parts 1 and 2 of this lab, you have this Data: Launch Height: y = 114 cm Horizontal Launch Velocity: v = 457 cm/s. How far, x, does the ball travel? Give your answer in cm to 3 significant figures (no decimal places)A ball, rolling with velocity 3 m/s, rolls off a cliff. The cliff ledge is 70 m above the ground below. What is the horizontal distance the ball will travel before hitting the ground. Give the answer in meters.A baseball diamond is a square with side 90 ft. A batter hits the ball and runs toward first base with a speed of 20 ft/s. 90 ft (a) At what rate is his distance from second base decreasing when he is halfway to first base? (Round your answer to one decimal place.) ft/s (b) At what rate is his distance from third base increasing at the same moment? (Round your answer to one decimal place.) ft/s Need Help? Read It
- The formulas are in the picture. (The acceleration due to gravity is 9.8 m/s^2 because the formulas are already negative.) Please explain it in an easy to understand way and show what formulas you use too. Jason jumps his motorcycle off a 50m tall cliff. How fast does he have to go to land at his target 90 m from the base of the cliff? (assume no air resistance) A football is kicked at a 37 degree angle at 20 m/s. Calculate: a) max height b) time in the air c) horizontal range d) velocity at max height e) acceleration at max height. (Assume no air resistance.)High-speed motion pictures (3500 frames/second) of a jumping 230 μg flea yielded the data to plot the flea's acceleration as a function of time as shown in the figure ( Figure 1). (See "The Flying Leap of the Flea," by M. Rothschild et al. in the November 1973 Scientific American.) This flea was about 2 mm long and jumped at a nearly vertical takeoff angle. Use the measurements shown on the graph to answer the questions. Figure alg 150 100 50 0 0 0.5 1.0 1.5 Part E Use the graph to find the flea's maximum speed. Express your answer in meters per second to two significant figures. IVE] ΑΣΦ 3 v=1.6 Submit Previous Answers Request Answer ? X Incorrect; Try Again; 2 attempts remaining m/sThe Kentucky Derby is a 2000 m long horse race. The typical winning time is two minutes.What is the average speed, in miles per hour, of a horse that takes two minutes to finish the race?
- NASA has fired a rocket straight up into the air from ground level with an unknown initial velocity. It reaches a maximum height of 164,000 feet. This happened in Cape Canaveral therefore the rocket is under the acceleration of Earth's gavity in which we all know is -32 ft/sec/sec. Please round your answers to two decimal places. a). Find the time it takes for the rocket to reach maximum height. b). find the initial velocity necessary to reach that height.At what initial speed must the basketball player throw the ball at angle θ0 = 66° to make the foul shot. d1=1.0 ft, d2=14.0 ft, h1= 7.0 ft and h2= 10 ft. Enter units in ft/s. Use g = 32 ft/s/s. Compute your answer to the ±0.1 f/s. Hint: Use x = tvcos(θ) and y=vsin(θ)t - 1/2gt2A ball, rolling with velocity 2 m/s, rolls off a cliff. The cliff ledge is 90 m above the ground below. What is the horizontal distance the ball will travel before hitting the ground. Give numerical answer in meters.