Power problem 2

Solve the following problems without calculation, only by reasoning:

  • If we have two identical cars with different engine powers. The first has a maximum power of 100 kW and the second has a maximum power of 180 kW. Which of them can accelerate faster from 0 to 100 ?

  • If we have two cranes at a construction site. The first lifts a load of 2 tons while the second lifts a load of 3 tons. Which of the cranes will lift the load to the top of the building faster if they work with the same power?

  • Two machines can do the same job. The first machine does the job in 3 hours and the second machine does the same job in 4 hours. Which machine works with more power?


material editor: Gabriel Amakhabi