The velocity of an automobile starting from rest is v(t) = 100t/2t+15 where v is measured in feet per second and t is the time in seconds. Find the acceleration at

a) 5 seco nds,

b) 10 seconds, and

c) 20 seconds.

The velocity of an automobile starting from rest is v(t) = 100t/2t+15 where v is measured in feet per second and t is the time in seconds. Find the acceleration at

a) 5 seco nds,

b) 10 seconds, and

c) 20 seconds.