An elastic powered car is pulled back, stretching the elastic by 0.6m. The elastic has a spring constant of 1.5 N/m. The car has a mass of 0.75 kg. Find the velocity the car travels at

An automobile of mass 2000 kg moving at 30 m/s is braked suddenly with a constant braking force of 10000 n. how far does the car travel before stopping?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?