This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
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Halkan waa xalka su'aalaha: 1. The graph shows a velocity-time graph. b) The slope or gradient of the slope stands for In a velocity-time graph, the slope represents the rate of change of velocity. Acceleration c) From the graph, find out the acceleration and distance covered. Step 1: Determine the acceleration from the slope of the graph. The graph shows the velocity decreasing from 20 m/s at t=0 s to 0 m/s at t=4 s. Acceleration (a) = Change in velocityChange in time a = (v_f - v_i)/(t_f - t_i) a = 0 m/s - 20 m/s4 s - 0 s a = -20 m/s4 s a = -5 m/s^2 The acceleration is -5 m/s^2. Step 2: Determine the distance covered from the area under the graph. The area under the velocity-time graph is a triangle. Distance = Area of triangle = (1)/(2) × base × height Distance = (1)/(2) × 4 s × 20 m/s Distance = 40 m The distance covered is 40 m. 2. When the load shown in the figure is hung from the spring, it stretches. The spring is an elastic material. a) What is meant by an elastic material? An elastic material is a material that can return to its original shape and size after the deforming force or stress has been removed. b) The elastic property of a material is explained by Hooke's law. What does the letter x stands for? In Hooke's Law, which is often expressed as F = kx, the letter x stands for the extension or compression of the spring (or material) from its equilibrium position. Send me the next one 📸