1.A ball is thrown with an upward velocity of 5m/s from the top of a 10-m high building. One second later another ball is thrown vertically from the ground with a velocity of 10m/s. Determine the height from the ground where the two balls pass eachother.
2.A particle moves along a horizontal straight line with a constant acceleration of 5 meters per second squared to the left. The particle starts with a velocity of 10 meters per second to the right. The total distance the particle moves first to the right and then to the left in the next 5 seconds is nearly?