Answer:
27.39 m/s
Explanation:
From the question given above, the following data were obtained:
Deceleration (a) = –3 m/s²
Distance (s) = 125 m
Final velocity (v) = 0 m/s
Initial velocity (u) =?
The initial velocity (u) of the car can be obtained as follow:
v² = u² + 2as
0² = u² + (2 × –3 × 125)
0 = u² + (– 750)
0 = u² – 750
Collect like terms
0 + 750 = u²
750 = u²
Take the square root of both side
u = √750
u = 27.39 m/s
Thus, the initial velocity of the car was 27.39 m/s
