A rock is dropped from a tower and accelerates at a rate of 9.8 m/s2. It strikes the ground at a speed of 67 m/s. How long did the rock take to reach the ground? (assume no air resistance) Need Soon

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves