A 12-kg sled is moving at a speed of 2.0 m/s. At which of the following speeds will the sled have twice as much kinetic energy? A. 2.8 m/s B. 4.2 m/s C. 6 m/s D. none of the above

Is there an end of rainbow

Which object is in static equilibrium? a rolling ball that has a net force acting on it a cruising car that has no net force acting on it a book that has no net force acting on it and is sitting on a table a vase that has a net force acting on it

How long does it take a person at rest to breathe one mole of air if the person breathes 77.0 ml/s of air that is measured at 25 ∘c and 755 mmhg? express your answer numerically in seconds?

While performing an experiment, the student creating the data table is not sure if a measurement from the experiment is a vector or scalar.

The brighter cells surrounded by dark, narrow boundaries making up the cellular pattern that completely covers the visible surface of the sun are called

A farmer had 15 sheep, and all but 8 died. How many are left?

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds. If the boy and the scooter together have a mass of 30 kg, what is their final velocity? a. 2.

3. A 120.0 V generator supplies 3.0 kw of power. How much current ca the generator deliver?

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?