Pushups, under the form you're describing, I began at ~15 until I'd collapse. ~11 weeks later of doing this every other day until I dropped, I reached a peak of 38 (Freshman year of high school is my gauge for the record. But that was when I had the greatest increase per se. Got to about 50-55 by the end of my senior year). As for situps, our form was heels touching your ass (knees at an acute angle), arms crossed over your chest reaching opposite shoulder, someone sitting on your knees to stabilize you. You went until your elbows touched your thigh and then down as far as the small of your back touching the ground. I started being able to do 42 in a minute, got as high as 60 that year in a minute. It all depends on form, but still - doing as many as possible in a short period of time should allow you to do more. As for the other three, a broad jump might improve with weights and form, a shuttle run and "agility run" I have no clue - I was a distance guy
