18. A weightlifter lifts 100 kg from the floor to a height of .2 m. How much work is done by the weightlifter? Acceleration due to gravity is 9.8 m/s/s. W=(ma)d (Do not include units in
your answer.) -

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?