John scott

Popular questions and responses by John scott
  1. Physics

    An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man if a) the elevator is stationary? b) the elevator accelerates upward at 2 m/s2? c) the elevator rises with constant velocity 4 m/s? d) while rising, the elevator

    asked on October 4, 2015
  2. Physics

    A boy throws a ball straight up into the air so that it leaves his hand at 11 m/s. If the ball has mass 0.15 kg and the boy's arm moved through 1.5 m as he threw the ball, then what average force did he exert on the ball? I'm completely confused. I looked

    asked on October 4, 2015
  3. math

    Li is running a race around the school track. He runs 0.327 kilometer during the first half of the race. What is the distance that he travels in the first half of the race, rounded to the nearest hundredths

    asked on September 11, 2015
  4. math

    Li is running a race around the school track. He runs 0.327 kilometer during the first half of the race. What is the distance that he travels in the first half of the race, rounded to the nearest hundredths

    asked on September 11, 2015