Alguna persona fantastica que me ayude con estos 2 problemas urgente porfavor

1- un vehículo comienza a desplazarse desde los semáforos de
multicentro cuando le da la luz verde en dirección norte y se
desplaza con una aceleración constante de 32 km/h 2 . ¿cuál
será su velocidad pasado dos horas?

2- calcula la fuerza con que un jugador de billar golpea una bola
de billar, si el taco con el que lo golpea tiene 2,7 kg y la bola
700 g si la bola se mueva con una aceleración de 3 m/s 2 .

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?