What are the first three harmonics of a note produced on a 31.0 cm long violin string if waves on this string have a speed of 274.4m/s?
A hunter aims directly at a target (on the same level) 140 m away. If the bullet leaves the gun at a speed of 280 m/s, by how much will the bullet miss the target?
A man is laying on a board elevated by a support at the tip of the head of the board and by a scale at the foot of the board.
A 1340 kg Triumph TR-8 traveling north at 43 km/hr crashes head-on into a 1850 kg Checker cab moving west at 87 km/hr.
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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