Answer:
A: 
Step-by-step explanation:
Acceleration is second derivative of position, velocity is first derivative. Therefore, the velocity is the integral of acceleration.

Integrate:

V(0)=-5:

Therefore, v(t):

Option B is the odd one out
Answer:
400 cm
Step-by-step explanation:
1 cm = 1000m
44.8 cm=?
Power=work/time
Fd/t=P
Pt/F=d
therefore, the answer is A