-A Block of Mass M = 3

question 9

Multiple Choice

-A block of mass m = 3.6 kg,moving on a frictionless surface with a speed vi = 9.3 m/s,makes a perfectly elastic collision with a block of mass M at rest.After the collision,the 3.6 kg block recoils with a speed of v_f = 2.7 m/s.In the figure,the speed of the block of mass M after the collision is closest to:

• A)6.6 m/s
• B)8.0 m/s
• C)9.3 m/s
• D)10.7 m/s
• E)12.0 m/s

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Definitions:

Dendrites

Root-like structures, attached to the cell body of a neuron, that receive impulses, or incoming messages, from other neurons.

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that plays a critical role in the activation of muscle action, learning, and memory.

Inhibitory

Refers to a process that restrains or suppresses the activity of a biological function or neural pathway.

Excitatory

Relating to or causing excitation, often in the context of neurotransmitters that stimulate nerve cells to initiate or increase activity.