6. Extension: Click Reset. Without changing any of the sled masses or heights, record the potential and kinetic energy
of each sled and find the total energy before the collision.
Click Play and then Pause after the collision. Record the
potential and kinetic energy of each sled after the collision,
and find the total energy.

An object has a weight of 500 on earth what is the mass of this object

The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.