A 1-kg of wood is pressed against a vertical wall (µs= 0.25) by a force inclined 40º upward with respect to the vertical axis.
Draw the corresponding position-versus-time graph for the velocity-versus-time graph shown in the figure. Assume that x=0m at t=0s. (Figure 1)
You drive 4 km at 30 km/hr and then another 4 km at 50 km/h. What is your average speed for the whole 8 km trip?
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