A bus travelling at 15m/s accelerates uniformly at 4m/s2. What is the distance covered in 10s?

Physics Jamb, Waec, Neco Past Questions & Answers on Speed, Velocity and Acceleration

QUESTIONS 12.  A bus travelling at 15m/s accelerates uniformly at 4m/s2. What is the distance covered in 10s?

WAEC 2000 Ans: 350m ( wrong)

Solutions

Initial Velocity u = 15m/s

Acceleration a = 4m/s²

Distance s =?

Time t = 10s

Applying the second equation of motion 

S = ut + ½ at²

S = 15 x 10 + ½ x 4 x 10²

S = 150 + ½ x 4 x 100

S = 150 + 400/2

S = 250 + 200

S = 450m answer