Hi, I have the following questions.
1. A car accelerates uniformly from rest along a straight road and experiences negligible frictional forces. The car travels 15m in the second second of its journey. How far does it travel in the fifth second? (OPTIONS: 15m, 35m, 45m, 75m)
2. A car passes through traffic lights as they turn from red to green at a speed of 12ms-1. A motorcyclist, starting from rest, accelerates from the traffic lights in the same direction as the car at 1.5ms-2. After what distance from the light will they meet. (OPTIONS: 16m, 120m, 168m, 192m) NOTE - assume the car has constant accleration.
I can derive the following information from question 2, but I am stuck as to what to do from thereon. u = 0, a = 1.5.
PLEASE HELP.
Update - I have got question 1 to being 45m.