5. A truck starts from rest and moves with a constant acceleration of 5.0 m/s2. (a) Find its speed and (b) distance traveled after 4.0 s has lapsed. (a) 20 m/s, (b) 40 m

I have the answers but if someone can explain and show work thank you!!!

Which changes of state do the labels represent? a: b: c:

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

What is friction? how does it affect the motion of an object?