4. A ball is thrown vertically upwards and reaches a height of 28.8 m. Ignoring air resistance and g= 10 ms-2 (i) what is the balls velocity at maximum height?

(ii) calculate the initial upward velocity

(ii) the time taken to return to the throwers hand.

the force required to move the cart is divided by three or 33.33 n.

talk back to him about the sport and show him your expertise or leave the room

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation