1. Na jaką wysokość wzniesie się piłka kopnięta pionowo w górę z prędkością 20 m/s? 2. Piłka o masie 20 dag spada z wysokości 15 metrów. Oblicz jej prędkość w momencie uderzenia o ziemię. Ile wynosi jej energia kinetyczna na powierzchni ziemi.

What is the speed of sound in dry air if th e temperature is 46°C?

A ball that occupies 20cm^3 of space is half submerged, very gently, in a full glass of water. How much volume of water spills out?

How far did a car travel if it was on the road for 55.2s and it traveled at an average speed of 55m/s (I have to have all the steps; Given, Unknown, Equation, Substitute, Solve, Answer)

What type of energy makes up most of the internal energy of a solid substance

David turned on the television. the electrical energy turned into ... A) light B) sound C) light & sound D) light, sound, heat

Acceleration is a vector quantity. O O A. True B. False

What will happen to the brightness of a string of bulbs hooked up in series when you increase the number of bulbs in the string? A. Each light in the string will get brighter. B. Each light in the string will get dimmer. C.

What are the two factors that influence the composition of beach material

Which of the following indicates that a ChemicL change has taken place? (A) a change from liquid to a gas (B) an increase in the volume of a substance (C) a change in the color of a substance (D) a change from a solid to a liquid A precipitate is a

Which of these circuit schematics has an ammeter?