Answer:
Mass, m = 1500 kg
Step-by-step explanation:
Given that,
Force acting on the truck, F = 3000 N
Acceleration of the truck,

Let m is the mass of the truck. It can be calculated using second equation of motion as
F = m × a
m = 1500 kg
So, the mass of the truck is 1500 kg. Hence, this is the required solution.