With no friction, you can use the relationship between potential and kinetic energy to predict the speed of the car at the bottom of this hill from its starting height. To do this, start by setting the kinetic and potential energy equations equal to one another: K = 1/2 mv2 (2 is squared) = mgh the height is 75cm mass is 0.05 Kg (5 grams) and gravity is 9.81 m/s squared earths gravity

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Can you me find the slope! (30 points)

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.