Answer:
Maximum acceleration of the truck is 5.25 m/s^2
Explanation:
To find the maximum acceleration the truck first we need to calculate friction between truck and wood. Because of wood is not moving, coefficient of c_{s} need to be used for it. Then the formula will be:
1657.62 Newton is the friction.
So force against friction need to be at most 1657.62 N. Then equation will be:

Maximum acceleration of the truck need to be 5.25 m/s^2
I think it's 0.6. ∞
Hopefully, it's correct... ∵-∵
See attachment file below.
Hope it helped!
Answer: An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.
Explanation: The parts of a circut bit can easily be found online, but heres a pic i found.