Question

At t = 0 seconds, a cart is moving with a velocity of 10 cm/s and an acceleration of 4.0 (cm/s)/s. Assuming its acceleration stays at this value, what will its velocity be 7.0 seconds later?

Answer 1

v = u + at = 10 cm/s + (4 cm/s^2)×(7s) = 38 cm/s