An object moving at 18km / hr accelerates uniformly at 1.8m / sec. 1 ) what will be it velocity after it has moved 47.5cm? 2 ) how many seconds will the car takes to covered this distance?
Don't know how to solve this problem, I need some help please.
You really mean 47.5 centimeters?
18 km/hr * 1000 m/km * 1 hr/3600 s = 5 m/s
v = Vi + a t
v = 5 + 1.8 t
x = Vi t + (1/2) a t^2
x = 5 t + (1/2)(1.8) t^2
use your 47.5 whatevers for x and solve for t