A Particle Moving with a Constant Acceleration Has a Velocity

question 27

Multiple Choice

A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm. Its position 7.0 s later is x = −30 cm. What is the acceleration of the particle?

• A) −7.3 cm/s²
• B) −8.9 cm/s²
• C) −11 cm/s²
• D) −15 cm/s²
• E) −13 cm/s²

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Definitions:

Acetylcholinesterase Activity

The process by which the enzyme acetylcholinesterase breaks down acetylcholine, a neurotransmitter, in the synaptic cleft to terminate the transmission of a nerve impulse.

Neuromuscular Junction

The synapse or junction where a motor neuron transmits a signal to a muscle fiber, causing muscle contraction.

Depolarization

A decrease in the voltage difference across a cell's plasma membrane, resulting in a more positive internal environment.

Calcium Ions

Essential ions within the body that play pivotal roles in bone health, muscle contraction, nerve function, and blood clotting.