1) A jetline touches down at 275 km/hr on a 1.2-km-long runway. What’s theminimum safe value for the magnitude of its acceleration as it slows down?
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1) A jetline touches down at 275 km/hr on a 1.2-km-long runway. What’s theminimum safe value for the magnitude of its acceleration as it slows down?
2) An online retailer makes deliveries by drone, and packages the goods so theycan withstand an impact at up to 10.0 m/s.
(a) What’s the maximum height from which the drone can safely drop a package?
(b) How long is the package in the air?
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- A speedboat moving at 35.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.8 m/s? by reducing the throttle. (a) How long does it take the boat to reach the buoy? (b) What is the velocity of the boat when it reaches the buoy? m/sDuring the 2014 Olympic games, snowboarderShaun White rose 6.4 m vertically above the rim of the half-pipe.With what speed did he launch from the rim?A large rock is dropped from the top of a high cliff. Assuming that air resistance can be ignored and that the acceleration has the constant value of 10 m/s^2. how fast would the rock be traveling 6 seconds after it is dropped? what is its speed in MPH?
- If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and neglecting air resistance, after 10 s: a) How fast (speed) would it be traveling (in m/s)? b) What is its velocity (in m/s)? c) How far would it have fallen (in m)? d) What is its displacement (in m)?Researchers doing satellite tracking of albatrosses in the Southern Ocean observe a bird maintaining sustained flight speeds of 35 m/s- nearly 80 mph!! This seems surprisingly fast until you realize that the particular bird was flying with the wind, which was moving 23 m/s. What is the bird’s airspeed- its speed relative to the air?Let's assume that East Lake Road runs due East from the Boston Store in Erie, and there are mile markers along it ("Ten Miles from the Boston Store", etc.) A car starts at the 12 mile marker going East at 2 PM, turns around at the 20 mile marker at 3 PM, and stops at the 8 mile marker at 4 PM. What is the total displacement of the car from 2 PM to 4 PM, in miles? (Use "+" for East, and "-" for West) O +4 O-20 O +20 O -4 O none of the answers is correct
- A person falls from a height of 2.0m on earth (a=g=9.8m/s2). What acceleration is necessary for them to stop over 30 cm (assuming they bend their knees)? What if they don't bend their knees hence stop over a distance of 1 mm?Hi, I need help with this physcis problem. I've gone over it multiple times and can't firgure it out. Anyway you can help? A car, initially at rest, accelerates at a constant rate of 2 m/s2 due east (choose east as the positive direction; round your answer to the nearest meter per second; include units)What is its velocity after 1 second? What is its velocity after 2 seconds? What is its velocity after 3 seconds? What is its velocity after 4 seconds? What is its velocity after 5 seconds? What is its velocity after 9 seconds? If instead a car accelerates at a constant rate of 5 m/s2 due eastWhat is its velocity after 1 second? What is its velocity after 2 seconds? What is its velocity after 3 seconds? If instead a car accelerates at a constant rate of 5 m/s2 due westWhat is its velocity after 1 second?When last we left our friend Wile E. Coyote (SuperGenius), was peeling himself off a canyon wall and none the worse for wear. This time, he has obtained an Acme^ TM rocket-powered dragster with the AcmeTM Premium Parachute Braking System (patent pending)Starting from restthe dragster accelerates at a constant rate of 36.4 m/s ^ 2 for 14 seconds. At this point, the coyote realizes that he has passed the Road Runner and so he instantly cuts off the engine and deploys his braking system - which doesn't work. He therefore travels an additional distance of 1800 m at constant velocity until again becoming one with a canyon wall. Determine: (a) The total time for Wile E. Coyote's motion described above; on (b) The total distance covered by Wile E. Coyote's motion described above ; (c) The average velocity for Wile E. Coyote's motion described above.
- An over the shoulder can greatly increase your chance of surviving an overwise fatal car crah, especially if in this crash you experience an acceleration of no more than 30 "g's" (1 g = 9.8 m/s^2). We can call this the maximum rated acceleration. question A: What is the maximum rated acceleration? Please answer in m/s^2 ?? Question B: A car is travelling at 95 km/hr when it is in a head on collision. The car's front end is crushed, bringing it to a stop after undergoing the maximum rated acceleration. Calulate the distance that the front end of the car moves as it is caved in. Please answer in m Please answer both question A and BA racing car is used to test its suspensions and brakes. in a manufacture process. Itis raced and jumped over a ramp. It flies and further on lands at a speed of 44.4m/s. It then slows down at a rate of 15m/s?. How much road is required to bring the car to a complete stop? The car lands 70 meters away from a nearby beach. Will the car run into water?On a 200 km bike cycle ride, you ride the first 90 km at an average speed of 20 m/s. What mustyour average speed over the next 40 km be to have your average speed for the total 200 km be?(a) 60 m/s?