Apaper weight is dropped from the roof of a block of multi story flats. each storey being 3 metre high. it passes the ceiling of the 20th storeys at 30m/sec. if g = 10.0m/sec^2, how many storeys does the flat have.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

Acar of mass 800kg is moving at a speed of 2.2m/s.