• # question_answer Block 1 and Block 2 are again released from $h=1.2\text{ }m.$ Block 1 flies off the track end at 30° and Block 2 at $45{}^\circ$. Their speeds when they hit the floor 1 meter below the track end: A) are smaller for Block 1 than Block 2. B) are larger for Block 1 than Block 2. C) are the same for Block 1 and Block 2. D) depend on mass and angle, so the question cannot be answered.

[c] Since the speeds are the same at the track ends and they both fall through a vertical distance of 1 m from the track bottom, conservation of energy shows that their speeds when they strike the floor are equal also. Assume h = 1m and v = 4.85 m/sec for both. Then : $1/2m{{v}^{2}}+mgh=1/2m{{V}^{2}}$ (The mass will cancel, so V is the same for both blocks.)