If velocity is increasing, what does that indicate about the direction of the acceleration?

it would be going in the same direction as the velocity

Explanation:

If acceleration points in the same direction as the velocity, the object will be speeding up. Another way to say this is that if the acceleration has the same sign as the velocity, the object will be speeding up. And if the acceleration has the opposite sign as the velocity, the object will be slowing down.

If acceleration points in the same direction as the velocity, the object will be speeding up. ... Another way to say this is that if the acceleration has the same sign as the velocity, the object will be speeding up. And if the acceleration has the opposite sign as the velocity, the object will be slowing down.

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

the total distance traveled by the car is

30km + 49km = 79 km .