You drop a rock from a cliff. If air resistance is neglected, which of the following statements is (are) true?
1. The speed of the rock will increase.
2. The speed of the rock will decrease.
3. The acceleration of the rock will increase.
4. The acceleration of the rock will decrease.
a) 1 b) 1 and 4 c) 2 d) 2 and 3
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