An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of 15.4 m/s and measures a time of 26.2 s before the rock returns to his hand. What is the acceleratio

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.

Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning

Why is a noble gas different from other elements