Garnet H. answered • 02/06/13

Calculus, Physics, Stat, Linear Algebra, GRE, GMAT, SAT... Tutoring

they ask for parametric equations and they give you the speed

this is really projectile motion (the ball is moving both in the x and y dir. due to downward acceleration)

but to answer the question you only need the quantities for the **x-dimension:**

**v(t) = 140 **

**x(t) = 140t**

from x = 140 t we get 60 = 140 t

which leads to **t = 3/7 s**