Question

What is the force on an object that goes from 35m/s to 85 m/s in 20 seconds and has a mass of 148kg?

Answer 1

We will use Newton's second law to find the resultant force:
F = ma

For this, we need the acceleration given by:
a = (v - u) / t
a = (85 - 35) / 20
a = 2.5 m/s²

F = 148 x 2.5
F = 370 Newtons