How long does it take a train accelerating from 25.4 m/s to 81.2 m/s to cover 2130 m? A. 40.0 s
B. 76.3 s
C. 20.0 s
D. 38.2 s​

Will you chech and finish these for me, because i am stumped with them.

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

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