A sock stuck to the side of a clothes-dryer bar-
rel has a centripetal acceleration of 25 m/s2.
If the dryer barrel has a radius of 25 cm,
what is the tangential speed of the sock?
Answer in units of m/s.

please help
I am confused

Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

Ominge cade de la inaptimea de 3 metri apoi sare de la podea pina la inaltimea de 0,5 metri. determina a) forma traectoriei mingii. b) deplasarea mingii. c) drumul parcurs de minge. va rog foarte mult va dau coroana