Let v(t)=t^2−3t be the velocity, in feet per second, of an object at time t, in seconds.

a) What is the initial velocity? ___ ft/sec

b) When does the object have a velocity of zero? If there is more than time, list all answers in a comma separated list. ___ seconds

Question

Let   v(t)=t^2−3t   be the velocity, in feet per second, of an object at time t, in seconds. 
  
a) What is the initial velocity? ___  ft/sec 
  
b) When does the object have a velocity of zero? If there is more than time, list all answers in a comma separated list.   ___   seconds

technodynamic · Answer

It's calculus, but You're right I should try there too. thank you very much.

anonymous · Answer

initial velocity means v(0)
so 0..

velocity of zero so equate v(t) to zero

0 = t^2 - 3t
t(t-3) = 0

at t= 0 (as we found at a) and t = 3