A shopping cart with a mass of 45 kg is released at a height of 4.2 m at the top of the store's entrance ramp. What is the cart's velocity at the bottom of the ramp? (Hint Solve for GPE first.) 1) 9.1 m/s
2) 8.2 m/s
3) 9.2 m/s
4) 81 m/s​

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