Mass and mucentration data
sara's friend mike also decided to her out with her experiment, like you did. he designed an
investigation where he used pucks with different masses and hit them all with the same amount of force.
in order to be sure he hit the puck with the same amount of force each time, he asked sara if he could
borrow her robotic hockey stick swinging machine, and set the length of the swing to 40 cm every time.
check-in: why do you think mike wanted to hit the different pucks with the same force every time?