In which situation is the acceleration of the car negative? a) the velocity of a car was 75 km/h over 4 hours. b) the velocity of a car reduced from 50 km/h to 35 km/h over one minute. c) the velocity of a car increased from 40 km/h to 75 km/h over 15 minutes. eliminate d) the velocity of a car was 45 km/h at 2: 00 pm and at 4: 00 pm the velocity of the car was 85 km/h.

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.