A 500-G Firework Explodes into Two Pieces of Equal Mass $- 20 \hat { \mathbf { i } } - 20 \hat { \mathbf { j } }$

question 40

Multiple Choice

A 500-g firework explodes into two pieces of equal mass at an instant when it is traveling straight up at 10 m/s.If one half shoots off horizontally to the left at 20 m/s,what is the velocity,in m/s,of the other half immediately after the explosion? (The x axis is directed right;the y axis up. )

• A) \(- 20 \hat { \mathbf { i } } - 20 \hat { \mathbf { j } }\)
• B) \(- 20 \hat { \mathbf { i } } + 20 \hat { \mathbf { j } }\)
• C) \(+ 20 \hat { \mathbf { i } } - 20 \hat { \mathbf { j } }\)
• D) \(+ 20 \hat { \mathbf { i } } + 20 \hat { \mathbf { j } }\)
• E) \(- 20 \hat { \mathbf { i } } + 20 \hat { \mathbf { k } }\)

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Definitions:

Presynaptic Side

The part of a synapse that releases neurotransmitters from the axon terminal of a neuron into the synaptic cleft, initiating a neural signal.

Neurotransmitters

Chemical messengers released by neurons that transmit signals across a chemical synapse, such as between neurons or from neurons to muscles.

Axoaxonic Synapses

A specific type of synaptic connection where the axon of one neuron connects to the axon of another, impacting the release of neurotransmitters.

Transporter Proteins

Proteins that move molecules across cell membranes, regulating the passage of substances into and out of cells and within cellular compartments.