a toy car rolls from +3 m to +5 m. Which of the followingstatements is true?xf = +3 mxi = +3 mDx = +3 mvavg= 3 m/s
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A toy car of mass 2.1 kg is stationary, and a child rolls a toy truck of mass 4.7 kg straight toward it with a speed of 4.4 m/s. (Assume the direction the toy truck is initially rolling is the +x-direction.)
What is the velocity of the centre of mass of the system consisting of the two toys?