calculate the weight of a 4kg cat that falls 3 meters to the ground(consider F weight = mg, where g is 10 m/s^2

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0

Me ! since green bounces off red, this must be collision a.elastic b.explosion c.inelastic