Question

An object with an initial velocity of 20 m/s accelerates uniformly at 5 m/s 2 in the direction of its motion at a distance of 10 m. What is the final velocity of the object?

Answer 1

$v_f^2=v_i^2+2as$

$v_f=\sqrt{v_i^2+2as}=\sqrt{(20\ m/s)^2+2\times5\ m/s^2\times10\ m}=22.4\ m/s$

Answer: 22.4 m/s