An object travelling at 12 m/s has 64.8j of stored kinetic energy. What is the mass of the object, in grams?

How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m ? what is the pebble's speed when it has fallen 29.4 m ?

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

If a sphere and a cure have the same mass and are propelled up a ramp with the same force, which would travel father up the ramp? explain.