2. Three blocks with masses m1= 2.0 kg, m2 = 4.0 kg and m3 = 3.0 kg are placed side by side on a table. The friction between the blocks and the table is negligible. A constant force with magnitude F = 18 N is
applied to the left-most block. (a) Find the acceleration of the system of three blocks. (b) Find the contact
force between the left-most block and the middle block. (c) Find the contact force between the middle block
and the right-most block. (6 points)
ml
m2
m3

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

What is the rate of change in a objects position?

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th