A pole-vaulter first converts kinetic energy into. a ... thermal energy ... b ... chemical energy ... c ... mechanical energy ... d ... elastic potential energy ...

A loaf of bread is removed from an oven at 350° F and cooled in a room whose temperature is 70° F. If the bread cools to 210° F in 20 minutes, how much longer will it take the bread to cool to 185° F.

If an object starts at rest and moves 90 meters south along a straight line for 3 seconds, what is its average velocity? A. 90 m/s B. 30 m/s, South C. 30 m/s D. 270 m/s, South

How is weight of an object related to its mass.

Which fossil fuel is a mixture of aromatic hydrocarbons with high molar masses?

A metal sphere is launched with an initial velocity of 1.5 m/s as it leaves the ramp. the end of the ramp is 1.20 m above the floor. calculate the range of the sphere.

Why does momentum have a direction?

What is the difference between weight and mass?

An object has a mass of 8.00 kg. What is the gravitational force on the object by the earth?

Which of the following best characterizes the free energy change ΔG for an endothermic reaction under physiological conditions? A. The sign of ΔG is positive B. The sign of ΔG is zero C. The sign of ΔG is negative D.

In a recent hockey game, one player (m=100kg) was moving at a velocity of 8 m/s when he ran into another player (m=300kg) who was at rest (v=0m/s). After the collision, the two players were stuck together (moving with the same velocity).