calculate the acceleration if you push with a 20n horizontal force on a 3 kg block on a horizontal friction-free air table

Force = (mass)*(acceleration)

To calculate the acceleration experienced by the 3 kg block when a 20 N horizontal force is applied, we can use Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

The formula for Newton's second law is:

a = F / m

where:
a = acceleration
F = net force
m = mass of the object

In this case, the net force acting on the block is the horizontal force applied with no friction, which is given as 20 N. The mass of the block is 3 kg.

Substituting these values into the formula:

a = 20 N / 3 kg

Calculating this yields:

a = 6.67 m/s^2

Therefore, the acceleration of the 3 kg block when a 20 N horizontal force is applied is 6.67 m/s^2.