How much force is needed to accelerate a 1000-kg car at a rate of 3 m/s2

In the given question we already know the mass of the car. The mass of the car is 1000 kg. The acceleration at which the car needs to reach is 3 m/s^2. Based on these information's, the required answer can be easily deduced. We already know that

Force = Mass * Acceleration

= (1000 * 3) newton

= 3000 newton

So the amount of force that is required to move give the car an acceleration of 3m/s^2 is 3000 Newton.

Net force = mass * acceleration

mass = 1000 kg, acceleration = 3 m/s²

net force = 3000 N