Which of the following is not correct for an object in projectile motion on earth?
a. the only force acting on the object is gravity.
b. the shape of the object's path is a parabola.
c. the object's acceleration never changes with time.
d. the motion in the x-direction depends on the y-direction.

What is the difference between electrically neutral objects and electrically charged objects

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?