You walk 5 meters from point A to point B in 3 seconds. You then come back to point A in another 2 seconds. Your average velocity in m/s was: O 2.5 3.33 Zero O 2 1.67
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- An object is thrown straight up from the top of a building that is 31.2 m high. The object is thrown with a velocity of 16.4 m/s. At the same time the object is thrown upwards, a person runs along the ground with a constant speed of 3.4 m/s. When the object hits the ground, how far has the person gone in meters?A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 6.65 ✕ 107 km. Radio waves travel at the speed of light (3.00 ✕ 108 m/s). How many seconds does it take for the signal to reach the Earth?Some troublemaking kids are dropping water balloons from the roof of your apartment building. You are in your fifth-floor room and your window is 25 m above the sidewalk outside. You look outside and see that each balloon hits the pavement 1.5 s after passing your window. Express answers using 2 significant figures. a) How fast are the balloons traveling when they pass your window? b) Assuming the balloons are being released from rest, from what height above your window are they being released? c) If you threw a balloon upwards from your window with an initial speed of 6.5 m/s, would you be able to get it to the roof?