Question 1 Select the correct choices to complete the sentence.
Identify each of the following as either a contact force, field force, or not a force:

mass
ineria
the push of a hand
friction
air resistance
spring force gravity acceleration

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.