1. An automobile with a mass of 1000 kilograms accelerates when the traffic light turns green. If the net force on the car is 4000 Newtons, what is the car's acceleration?
2. A 25 Newton force accelerates a boy in a wheelchair at 0.5 m/s^2. What is the mass of the
boy and the wheelchair? (Hint: Solve Newton's second law for mass m=Fla)

carla slowed down in the beginning of her trip, stopped, and then sped up

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

answer: the correct answer for the fill in the blank is rods.

rods are the specialized photoreceptor cells that are present in the retina of human eye. they are responsible for vision in the night time ( also called scotopic vision). they have very low visual acuity and color distinguishing ability.

as they are responsible for vision in night time, therefore they are found predominantly in the nocturnal animals.