Which set of symptoms describes the short-term effects of amphetamines? detached, dream-like state
fast heart rate with extreme alertness and high energy
feelings of relaxation or anxiety with possible hallucinations
altered senses with difficulty in thinking and impaired memory

fast heart rate with extreme alertness and high energy

Explanation:

Amphetamines are drugs that act by stimulating the central nervous system, thereby speeding up the chemical signals that travel between the brain and the body. These substances (amphetamines) can be legal or illegal. For example,  Adderall and Dexedrine are amphetamine drugs currently approved by the U.S. Food and Drug Administration (FDA) for therapeutic use, whereas 'ecstasy is an illegal drug used for recreation. Amphetamines can increase heart rate and blood pressure and thus cause cardiovascular diseases (causing inflammation and artery spasms). Moreover, amphetamines also increase energy by stimulating the release of dopamine (a neurotransmitter) in the frontal cortex, which causes feelings of happiness, increases alertness and decreases fatigue.

fast heart rate with extreme alertness and high energy

Explanation:

that is so