Two objects push on each other. The first object has a mass 30.0 kg and it accel

Question

Two objects push on each other. The first object has a mass 30.0 kg and it accelerates at 2.00 m/s2 toward the east. The second object has a mass 10.0 kg. If no other forces are acting on the objects, what is the acceleration of the second object? Hint: from numbers you see “Pushing Force” is constant Two objects push on each other. The first object has a mass 30.0 kg and it accelerates at 2.00 m/s2 toward the east. The second object has a mass 10.0 kg. If no other forces are acting on the objects, what is the acceleration of the second object? Hint: from numbers you see “Pushing Force” is constant

Explanation / Answer

pushing force exerted by second object on first object F21 = m1*a1 = 30*2 = 60 N

from newtons's third law F21 + F12 = 0

F12 = -F21 = -60 N

from newtons second law Fnet = m*a

F21 = m2*a2

-60 = 10*a2

a2 = -6 m/s^2   toward west

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