Um carrinho, que está se movendo com velocidade de 20m/s, passa a sofrer uma força resultante de intensidade 60N, na mesma direção e no sentido oposto à velocidade verifica-se que, após um intervalo do tempo de 5,0 m/s. Qual é a massa do carrinho em Kg? (por favor me ajuda)​

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Which sound characteristic is not affected by the relative motion of an object

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)