Distance: Distance is how far one thing is from another thing. It can be measured as lines or circles, or up or down. Someone who goes around in a circle has traveled a distance, even though his position has not changed Force Whenever there is an interaction between two objects, there is a force upon […]
BAM! Suddenly, the master alarm in the lunar module (LM) rang out for attention with all the racket of a fire bell going off in a broom closet. “Program alarm,” astronaut Neil Armstrong called out from the LM in a clipped but calm voice. “It’s a twelve-oh-two.” “1202,” repeated astronaut Buzz Aldrin. They were 33,500 […]
All of your life, you have been learning new skills. When you were five years old, someone taught you how to tie your shoes. At age six, you learned how to ride a bike without training wheels. Fast forward to your pre-teen and teen years, and you might know several skateboard tricks, how to do […]