A block of mass 2 kg is placed on a smooth horizontal surface. A force of 4 N acts on it. What is the acceleration of the block?
Correct: B
The acceleration of the block can be calculated using the formula F = ma, where F is the force applied, m is the mass of the block, and a is the acceleration. Given F = 4 N and m = 2 kg, we can rearrange the formula to a = F/m = 4/2 = 2 m/s^2.