02 Kinematics

Free fall without air resistance (Experiments on Moon and on Earth)

Will any two objects, e.g. a feather and a ball/hammer fall at the same rate if there is no air resistance?

See this being tested on the moon as well as on Earth in the videos below:

PhET projectile motion applet

Enhance your understanding of projectile motion by setting a value and direction for the initial velocity and 

• observe the vertical and horizontal components and resultant vector arrows for velocity and acceleration using "Intro" and "Vectors". What do you notice about the length of arrow (magnitude of vector) and direction of arrow (direction of vector)?

• do the calculation for the range and check if you are correct by trying to hit a target using "Lab"

Play with the applets here:  https://phet.colorado.edu/sims/html/projectile-motion/latest/projectile-motion_en.html