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- The acceleration of a body moving along the X-axis is a = (4x - 2) , where x is in m %3D meters. Given that Un 10 m/s at xo 0, what is its velocity when x = %3D 10 m? 25.7 m/s 29.3 m/s -29.3 m/s 21. 4 m/s O 23.2 m/sUse the following information to answer the next two questions The year is 1927. You are a crime scene investigator. You are considering pressing reckless driving charges against the driver of Car 2. To do this, you must find the speed of Car 2 before the crash. Allegedly, Car 1 was parked, when Car 2 crashed into it. Using the skid pattern, you determine that the speed of the two joined vehicles was 17 m/s immediately following the impact. Car 1 has mass of 1800 kg and Car 2 has a mass of 1100 kg.The figure shows the velocity of a train as a function of time. At what time was its velocity greatest?
- An object is moving east with a constant speed of 25 m/s for 5 seconds. What is the object's acceleration? O 125 m/s/s O 5 m/s/s O O m/s/s O 25 m/s/s 1 3. 4.The position of a particle is r(t) = (5.0t2î – 4.0j + 6.0t³k) m. (a) What is the velocity of the particle at 0 s and at 1.0 s (in m/s)? (Express your answers in vector form.) v(0 s) m/s v(1.0 s) m/s (b) What is the average velocity between 0 s and 1.0 s (in m/s)? (Express your answer in vector form.) Vavg m/sA particle has a velocity of v= (3i+5j)m/s and a constant acceleration of a=(-1.5i-4.5j)m/s^2 What is its velocity after 2 seconds? Is it moving faster or slower after 2 seconds?
- A person jogs three complete laps around a 200 m track in a total time of 11 minutes. What is the jogger's average velocity in m/s. 0 m/s 3.7 m/s 21.4 m/s 37 0.91A ball is thrown straight upward from ground level with a speed of 22 m/s How much time passes before the ball strikes the ground if we disregard air resistance? 2.2 s 1.4 s 4.5 s 0.7 sWhat is the height of a projectile in 6 seconds if its initial height is 820 feet, and it has a velocity of 20 feet per second? O 328 ft O 342 ft O 364 ft O 386 ft