how would you find the answer?

Question

What velocity is attained by an object which is accelerated at 0.30 m/s2 for a distance of 50. m with a starting velocity of 0.0 m/s?

ANS: 6 m/s.

How would you get to that answer??

Answer 1

This follows simply from the definition of acceleration (the rate of change of velocity).

a = v/t
v = a*t = 0.3*50 = 6

Had their been an initial velocity you would have solved it like this:

a = (v2-v1)/t
v2 = a*t + v1 = 0.3*50 + 0 = 6

Answer 2

v^2 = u^2 + 2as: v is the final velocity, u the initial velocity, a the acceleration, & s the distance. In anycase, it doesn't add up to 6 m/s