First hill
h/2
If h is 90m and vois 2 m/s. If the mass of the cart is 400 kg, fill the table below
PE = mgh
KE = 0.5my2
Total Energy (Mechanical Energy) = PE + KE
Potential Energy Kinetic Energy Total Energy
(oules)
(Joules) (Joules)
Point A
Point B
Point C

What is the measure of a change in an objects velocity?

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s