13.44 A steel ball is released from rest in a container of oil. Its downward acceleration is a = 2.4 - 0.6v in/s², where v is the 2.40.6v ball's velocity in in/s. What is the ball's downward velocity 2 s after it is released?
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- A stone is thrown straight up from the edge of a roof, 650650 feet above the ground, at a speed of 1616 feet per second.A. Remembering that the acceleration due to gravity is −32ft/sec2−32ft/sec2, how high is the stone 55 seconds later?B. At what time does the stone hit the ground?C. What is the velocity of the stone when it hits the ground?2. You wake up one morning to find yourself in a strange room with opaque walls, and no visible doors or windows. You decide to do some experiments to find out more about your strange situation. you drop a ball from a height of 1.22 m above the floor. The ball hits the floor 0.349 s after your drop it. You guess that you must have been taken to an alien planet with gravity different from Earth s. What is this planet s g (that is, the magnitude of the acceleration due to gravity on this planet)? 20.0 m/s^2 10.0 m/s^2 15.0 m/s^2 30.0 m/s^2E (2) Pars ats to the other side c) Calculate the otter's velocity, relative to the bank from where it started. viszsub ain biz silto ortof 5 67 18010 Your flight to your friend's house in Halifax has a short layover in Toronto. Your total flight time is 6.25 hours. The first flight to Toronto covers a distance of 2700 km [35.07 of E], and the second flight to Halifax covers a distance of 1280 km [10.0° N of E]. Total: 6.25 hours a) What was the total distance you traveled? Show all work. flight 1: 2700 Kim [35.0°sof 3] [10.0° MofE]
- A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by v⃗ =[ 5.00m/s − (0.0180m/s3) t2 ] i + [ 2.00m/s + (0.550m/s2) t ] j . a. What is the magnitude of the velocity of the car at t = 8.00 s? b. What is the direction (in degrees counterclockwise from + x-axis) of the velocity of the car at t = 8.00 s? c. What is the magnitude of the acceleration of the car at t = 8.00 s? d. What is the direction (in degrees counterclockwise from + x-axis) of the acceleration of the car at t = 8.00 s?E (2) Pars ats to the other side c) Calculate the otter's velocity, relative to the bank from where it started. viszsub ain biz silto ortof 5 67 18010 Your flight to your friend's house in Halifax has a short layover in Toronto. Your total flight time is 6.25 hours. The first flight to Toronto covers a distance of 2700 km [35.07 of E], and the second flight to Halifax covers a distance of 1280 km [10.0° N of E]. Total: 6.25 hours a) What was the total distance you traveled? Show all work. flight 1: 2700 Kim [35.0°sof 3] [10.0° MofE]