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
Here's the solution for part (b) of the speed-time graph problem: b) The length of the race is 100m. After 10 seconds, the athlete continues to run at a speed of 8m/s until the end of the race. Calculate the total time the athlete takes to complete the 100m race. From part (a), we know the athlete covers 72 m in the first 10 seconds. The total race length is 100 m. Step 1: Calculate the remaining distance to be covered. Remaining Distance = Total Race Length - Distance Covered in first 10 s Remaining Distance = 100\, m - 72\, m Remaining Distance = 28\, m Step 2: Calculate the time taken to cover the remaining distance. After 10 seconds, the athlete runs at a constant speed of 8 m/s. Time = DistanceSpeed Time for Remaining Distance = 28\, m8\, m/s Time for Remaining Distance = 3.5\, s Step 3: Calculate the total time to complete the race. Total Time = Time for first 10 s + Time for Remaining Distance Total Time = 10\, s + 3.5\, s Total Time = 13.5\, s The total time the athlete takes to complete the 100 m race is 13.5 s. Last free one today — make it count tomorrow, or type /upgrade for unlimited.