Question

Problem 1: Still 6km away from the impact site, Abraham Lincoln turns his vehicle 30 degrees to the north to avoid the worst of the wreckage and hits the accelerator.

                A: If for the 10 seconds prior the sixteenth president of the United States had moved 650 meters west, what was their average velocity over the ten seconds in magnitude and direction?

                B: 20 seconds after hitting the accelerator, Abraham Lincoln is now 1900 meters northwest of the position when the acceleration began. What was their average velocity over the last 30 seconds?

                C: If the sixteenth president’s acceleration was approximately constant over the 20 second period towards the northwest, what is their instantaneous velocity at the end of the 20 second period in magnitude and direction?

Answer 1