Work Calculations
A cat who weighs 90 N walks up a flight of stairs that are 3 m high.  How much work has it done?
How much work is required to throw a football with a force of 200 N a distance of 50 meters?
A man applies a force of 100 N to a rock for 60 seconds, but the rock does not move. What is the amount of work done by the man on the rock?
A cat lifts its body and does 270 J worth of work.  This takes 9seconds.  What is the power?
A weightlifter lifts weights.  She does 700 J worth of work in 10 seconds.  What is her power?
An elevator lifts a man with 200 N of force a distance of 30 m.  This took 60 seconds.   What is the power?
A toddler lifts a cat with a force of 20 N.  He moves the cat a distance of 4 meters.  This took 10 seconds.  What is the power?

Work calculations

  • 1.
  • 2.
    A cat whoweighs 90 N walks up a flight of stairs that are 3 m high. How much work has it done?
  • 3.
    How much workis required to throw a football with a force of 200 N a distance of 50 meters?
  • 4.
    A man appliesa force of 100 N to a rock for 60 seconds, but the rock does not move. What is the amount of work done by the man on the rock?
  • 5.
    A cat liftsits body and does 270 J worth of work. This takes 9seconds. What is the power?
  • 6.
    A weightlifter liftsweights. She does 700 J worth of work in 10 seconds. What is her power?
  • 7.
    An elevator liftsa man with 200 N of force a distance of 30 m. This took 60 seconds. What is the power?
  • 8.
    A toddler liftsa cat with a force of 20 N. He moves the cat a distance of 4 meters. This took 10 seconds. What is the power?