A spaceship traveling at 1,000 miles per hour enters an area free of gravitational forces and free of air resistance. The pilot
can slow the ship down by shutting off the engine for a while.
TRUE
FALSE

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

Who was the first scientist to measure speed as distance over time?