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.
ScanSolve AI Answer
Hey ngwaemeldaayeng, good to see you again. A) i) Uniform acceleration means that the velocity of the car changes by an equal amount in equal intervals of time. ii) Step 1: Identify the given values and the formula for acceleration. Given: Initial velocity, u = 0 m/s Final velocity, v = 15 m/s Time, t = 20 s The formula for acceleration is v = u + at. Step 2: Substitute the values into the formula and solve for a. 15 m/s = 0 m/s + a × 20 s 15 m/s = a × 20 s a = 15 m/s20 s a = 0.75 m/s^2 The acceleration of the car is 0.75 m/s^2. iii) Step 1: Identify the given values and the formula for distance. Given: Initial velocity, u = 0 m/s Final velocity, v = 15 m/s Time, t = 20 s The formula for distance covered is s = ((u+v))/(2)t. Step 2: Substitute the values into the formula and solve for s. s = (0 m/s + 15 m/s)2 × 20 s s = 15 m/s2 × 20 s s = 7.5 m/s × 20 s s = 150 m The distance covered by the car is 150 m. B) i) During the braking process, the car's kinetic energy is converted into heat energy (due to friction between brake pads and wheels) and sound energy. Send me the next one 📸