2 A ball is thrown up with a speed of 20 m/sec. Assuming g= 10m/sec², plot a velocity-time and an acceleration-time graph. %3D
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- 2. The displacement of a particle which moves along the x axis is given by x = (-5 + 3t)^e-0.2t, consider x to be in feet and t in seconds. Plot the displacement, velocity and acceleration for the first 20 seconds of motion and determine, both graphically and by your established equation for acceleration, the time at which acceleration is 0.Vy=?Hint 1 object's at t = 1 s and t = 6 s. An object has an acceleration of +1.2 cm/s². At t = 4 s, its velocity is -3.4 cm/s. Determine the v(t = 1 s) cm/s %3D cm/s %3D (s 9 = ?)a
- If the velocity is constant towards the right direction, the graph of displacement x vs time t is a A. line with a positive slope. B. line with negative slope. C. parabola in the first quadrant. O D. parabola in the 4th quadrant. An object is moving towards the right direction. Velocity is constant. The graph of velocity vs time t is a line O A. along the t axis B. parallel to the t axis C. parallel to the v axis. O D. with nonzero slope. Velocity of a moving object is towards the right. Velocity is constant. The graph of acceleration a vs time t is a A. line parallel to the acceleration a axis. B. line along the acceleration a axis. C. line along the t-axis. OD.line with positive slope.2.) A buggy car starts at 10 m and travels in the +x direction with a constant velocity of 1.5 m/s for 4 s. The car immediately stops for 3 s and turns around and travels in the opposite direction with a constant velocity of 2 m/s for 10 s. a. Draw a position -vs- time graph and velocity -vs- time graph.Page < c. The acceleration is +1.5 m/s². d. The acceleration is +3.0 m/s². e. The acceleration cannot be determined. 2 Multiple Choice Questions 1. A car enters a 25-m intersection travelling with a velocity 5 m/s in the west direction. When it clears the intersection (after it covers the 25-m), it is travelling with a velocity of 10 m/s still in the west direction. What is the acceleration of the car? Assume that east is in the positive x-axis and west is in the negative x-axis. a. The acceleration is -9.81 m/s. b. The acceleration is -1.5 m/s².