Question

What is the final velocity of a car that accelerates from rest for 7 seconds at 2.5 m/s2?

Answer 1

v=7.8

Step-by-step explanation:

at rest v⁰ is zero

v²= v⁰t+1/2at²

=1/2×2.5×7²

=0.5×2.5×49

=7.8