Who was the first astronaut to step outside of the Apollo 11 spacecraft, saying the now famous words “one small step for man, one giant step for mankind” as he placed the American flag on the rocky terrain?
Buzz Aldrin
Michael Collins
Neil Armstrong
Yuri Gagarin

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.

Photons with the highest energy have the longest period