physics
posted by prabh .
A car traveling 59 km/h accelerates at the rate of 8 m/s2. How many seconds are required for the car to reach a speed of 90 km/h? ENTER NUMBERS ONLY (ONE DECIMAL PLACE). NO UNITS

First convert 59 km/h and 90 km/s to m/s.
59 km/h = 16.39 m/s
90 km/h = 25.00 m/s
Change in V = 8.61 m/s
8 m/s^2*T = 8.61 m/s
Solve for T, the time spent accelerating