posted by John on .
A bod of 10kg is traveling in straight line at 10m/s (a)what is de momentum?(b)what is de average force required to increase its velocity 4rom zero to 20m/s in 4seconds?
p = mv = 10 * 10 = 100
a = ∆v/∆t = (20-0)/4 = 5
F = ma = 10*5 = 50
When you are only given a few pieces of data, your formulas will be relatively simple.