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)

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.