Newton's first law of motion is also called the law of
a. constant velocity
b. inertia
c. force
d. mass

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.