What are the black spots on the sun called

A 4.0 kg food pack was dropped from a height of 200 m by a helicopter during flood relief operations. At what velocity will the food pack be falling halfway to the ground?

If a particle's position is given by x=4-12t+3t^2, where t is in seconds and x is in meters, what is its velocity at t=1 second?

What steps are involved in converting potential energy to kinetic energy, or kinetic energy to potential energy?

There are two identical small metal spheres with charges 22.8 µC and - 16.7668 µC. The distance between them is 6 cm. The spheres are placed in contact then set at their original distance.

If the vector represents velocity this number represents the speed

What two units of measurement are necessary for describing speed?

If 3,600 J of work is done in 3.0 s, what is the power? 0.00083 W 1,200 W 3,600 W 11,000 w

Julia rides her horse 12 miles in 45 minutes. What is her average speed in mi/min? Show Your Work.

What happens to the inertia of an object of its mass is decreased?

An object has an acceleration of 24 m/s/s. How long would it take the stationary object to reach a velocity of 6.8 m/s?