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- 1. Gabby went walking at a distance of 200 m in 20 s. Whar was the Gabby's average speed? a. Given: b. What to find? c. Formula: d. Solving: e. Final Answer: 2. What is Sandra's average velocity if her position changes from 25 west to 40m west during a 10s time interval? a. Given: b. What to find? c. Formula: d. Solving: e. Final Answer: 3. Find the average acceleration of a northbound subway train that slows down from 12m/s to 9.6m/s in 0.8s.1. In an experiment, a shearwater (seabird) was taken from its nest, flown 5150 km away, andreleased. It found its way back to its nest 13.5 days after release. If we place the origin in thenest and extend the +x-axis to the release point, what was the bird’s average velocity in m/s(a) For the return flight?(b) For the whole episode, from leaving the nest to returning?A projectile is fired vertically from the ground with an initial velocity of 220 ft/sec. The initial acceleration is a=−32 ft/sec^2. 1. What is the velocity equation? Use t as the variable and v for the velocity. 2. What is the displacement equation? Use t as the variable and s as the displacement. 3. What was the velocity at t=5 seconds? 4. What time did the projectile reach its maximum height? (Hint: ?=0) Round to 1 decimal place. 5. What was the maximum height? Round to 1 decimal place.
- . A student drove to the university from her home and noted that the odometer reading of hercar increased by 12.0 km. The trip took 18.0 min. (a) What was her average speed? (b) If thestraight-line distance from her home to the university is 10.3 km in a direction25.0 degrees south ofeast, what was her average velocity? (c) If she returned home by the same path 7 h 30 min after she left, what were her average speed and velocity for the entire tripIn an experiment, a shearwater (a seabird) was taken from its nest, flown a distance 5190 kmkm away, and released. It found its way back to its nest 13.5 daysdays after release. If we place the origin in the nest and extend the +x+x-axis to the release point, what was the bird's average velocity for the return flight? Express your answer in meters per second. vav.−xvav.−x = ________________ m/s What was the bird's average velocity for the whole episode, from leaving the nest to returning? Express your answer in meters per second. vav.vav. = __________________ m/sIf you divide the total distance traveled on a car trip (as determined by the odometer) by the time for the trip, are you calculating the average speed or the magnitude of the average velocity? Under what circumstances are these two quantities the same?
- 1.Which of the following is not a vector quantity? a. temperatureb. velocityc. accelerationd. displacementis given by which of the2A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is the average velocity?a. 1.7 m/sb. 2.5 m/sc. 3.4 m/s d. zero3.A vehicle designed to operate on a drag strip accelerates from zero to 30 m/s while undergoing a straight line path displacement of 45 m. What is the vehicle's acceleration if its value may be assumed to be constant?a. 2.0 m/s2b. 5.0 m/s2c. 10 m/s2d. 15 m/s24.Which of the following is an example of a vector quantity? a. velocityb. temperaturec. volumed. mass5.A ball is launched from ground level at 30 m/s at an angle of 35° above the horizontal. How far does it go before it is at ground level again?a. 14mb. 21mc. 43m d. 86mGiven that the initial velocity of an object is = 20 m/s and the acceleration is a= 2m/s:ViA. After 4 seconds, what is the final velocity of the object ? VfB. What time t does it take to reach a final velocity of = 80 m/s. VfC. Using the time you found from B, what is the final position of the object ?( remember, Xfunless told otherwise, always assume the initial position is =0. Xi=0Two ducks, Donald and Cassiopeia, are gliding gracefully toward eachother along a pond, in a straight line. Donald is initially moving at v =0.500 m/s, and begins accelerating at 0.100 m/s2 at t = 0 s. Cassiopeiamoves at a constant speed of v = 0.700 m/s. If they are initially separatedby 25.0 m, where will they collide? Take Donald’s initial position as theorigin. How long will it take for them to collide?
- I'm not sure how to solve this! I tried and got 1.3 / 2.4 seconds. Am i right? Could you explain how to do it if i'm not? Cheers ! In a classic Seinfeld episode, Jerry tosses a loaf of bread (a marble rye) straight upward to his friend George who is leaning out of a third-story window. If the loaf of bread leaves Jerry's hand at a height of 1 m with an initial velocity of 18 m/sec, write an equation for the vertical position of the bread s (in meters) t seconds after release. How long will it take the bread to reach George if he catches the bread on the way up at a height of 16 m? Round to the nearest tenth of a second.PLEASE ANSWER IN 10 MINUTES ! ! ! A particle's position along the x-axis is given by the equation; ?(?)=1?3−3?1+4x(t)=1t3−3t1+4 where ?x is in meters and ?t is in seconds. Find the instantaneous velocity of the particle at ?=2?t=2s. Please express your answer with zero decimal places in units of m/s.A spacecraft is always headed north, starts at 90m/s, and maintains a constant acceleration of 0.7m/s2 for 3.9 min. What is it's displacement during this time? Round your answer to 3 significant digits, and don't forget the units.