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8. The motion of a particle starting from rest is governed by the a-t curve shown. Draw the v-t and s-t curved. Determine the displacement at t = 9 seconds.
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- 2. The car shown passes point A which is our origin, i.e. s = 0 at A. The speed of the car increases linearly as described by the function v= 15 + 0.5 s (m/s). Find the y = 16 – B magnitude and direction of the car's acceleration as it reaches point B, a distance 35 m from A.11The position functions of four particles are given as follow. Which of the particles have constant acceleration? Particle 1: (t) = 3.1 – 2.7 %3D Particle 2: (t) = 3.5 + 1.4t Particle 3: (t) = 3.1 – 2.7t2 Particle 4: z(t) = 3.5 – 3.4t - 1.4t All of them O only 3 and 4 O only 2 and 3 only 1 and 2
- 3. F(t) = 2ti - 2tj + tk9. A ball is thrown into the air and follows a parabolic trajectory. At the highest point in the trajectory. Select one: a. The velocity is zero, but the acceleration is not zero b. both the velocity and acceleration is not zero c. the acceleration is zero, but the velocity is not zero d. neither the acceleration nor the velocity are zeroAirplane makes a gradual 90 degrees turn while flying at a constant speed of 200 m/s. The process takes 20.0 seconds to complete. 1. for this turn, the magnitude of the radial acceleration of the plane is?