Question

The initial speed of an object is Vi=12,7m/s. Find its speed 4 s later if it
a) accelerates uniformly at 3 m/s2 and b) accelerates uniformly at 3m /s2 .​

Answer 1

u(initial speed)=12.7 m/s

t=4s

a) a=3m/S2

v=u+at

=12.7+(3)(4)

= 12.7+12

v=24.7m/s