the distance travelled by a particle in time t is given by x = a+bt + ct2 +dt3 .Find the dimension of a ,b ,c ,and d.

Explain why electric current cannot exist if a current doesn't have a voltage source.

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.