A 20 kg ladder 10 m long is leaned against a frictionless wall at an angle of 55°. A 60 kg electrician slowly climbs the ladder. The coefficient of static friction between the ladder and the floor is 0.5. How far up the ladder can she climb before it starts to slip? If she resets the ladder at a higher angle, she can go all the way to the top. What is the minimum angle?

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19