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- I need helpAn object's position in the as a function of time obeys the equation; x(t) = 14.2/t2.17 + 5.1t3 where all constants have proper SI Units. What is the speed of the object in the x direction at t = 1.93 seconds?8:07 AM P. +234 813 145 1114 1 minute ago O+ 4653 91 . A stone thrown vertically upwards returns to the ground. Which of the following figures represents the velocity-time graph? ΣΤ T 2T ??? D. Vel n о
- Bob has just finished climbing a sheer cliff above a level beach and wants to figure out how high he climbed. All he has to use is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher and knows that the fastest he can throw the ball is about ?0=34.1 m/s.v0=34.1 m/s. Bob starts the stopwatch as he throws the ball, with no way to measure the ball's initial trajectory, and watches carefully. The ball rises and then falls, and after ?1=0.910 st1=0.910 s the ball is once again level with Bob. Bob cannot see well enough to time when the ball hits the ground. Bob's friend then measures that the ball hit the ground ?=123 mx=123 m from the base of the cliff. How high above the beach was the ball when it was thrown?15. Abby is chasing Bradley due north along Warden Avenue at a speed of 7 m/s. She is 47 meters south of the Tim Hortons while Bradley makes a turn to run westward at a speed of 9 m/s. What is the minimal distance between them and how many seconds after Bradley makes a turn would it happen?a. What is vav,x for the interval from t = 0 to t = 3.60 s? answer in m/s b. What is vav,x for the interval from t = 0 to t = 3.50 s? anser in m/s
- A nerve impulse travels along a myelinated neuron at 66.5 m/s. a. What is this speed in mi/h? b. What is this speed in cm/ms?0 Assume that friction is so small that it can be ignored. If you think that none is correct, answer choice J. A force is applied to the car. Choose the one force graph (A through H) for the statement below which could allow the described motion of the car to continue. The car is at rest. B C F 0 I C e FOL C e O с e + + 0 0 1 + Time Time Time +You are sitting in your car at a red light when you see a zombie standing still 65m in front of your car. You both begin to accelerate towards each other. Your car accelerates at 1.8 m/s^2 and the zombie accelerates at 0.6 m/s^2. How long does it take for you to strike the zombie? Make sure to include a diagram of the physical situation, label known and unknown quantities with units, and coordinate system. Thanks!
- Gaby and her cousin, Fiona, live 45 km apart. Every day, they drive by one another to get to work. Gaby leaves home at 7:00 a.m. and drives at the road speed of 60 km/h. Fiona, however, always leaves home 20 min later and therefore speeds by 10 km/h. Approximately what time will Gaby meet Fiona on the road?Tutorial Exercise A soccer ball is kicked from 2 feet above the ground. The height, h, in feet of the ball after t seconds is given by the function h = -16t2 + 64t + 2. (a) Graph the function. (b) At what time(s) is the height of the ball 50 feet? Step 1 Create a table of values for the function. [AlgUns.0386] The height function is h = -16t2 + 64t + 2. Create a table of values for the ordered pairs of the form (t, h). th = -16t² + 64t + 2 %3D 1 2 4 Submit Skip (you cannot come back)Can you help with d.