A figura representa um automóvel A, rebocando um trailer B, em uma estrada plana e horizontal. A massa do automóvel e a massa do trailer são, respectivamente, iguais a 1.500 kg
e 500 kg. Inicialmente, o conjunto parte do repouso atingindo a velocidade de 90 km/h em 20
segundos. Desprezam-se os efeitos da força de resistência do ar sobre o veículo e o reboque.
Em relação à situação descrita, responda aos itens abaixo:
a) Qual a aceleração imposta pelo motor do automóvel ao conjunto?
b) Qual a força resultante que atua no conjunto?
c) Qual é a força que o automóvel exerce sobre o trailer?

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.

How do we measure or think of speed in the united states?