why is it that a football does not stay in motion at a constant speed when thrown, as the first law of motion suggests that it would?

1) air resistance and acceleration

2) gravity and mass

3) distance, mass and gravity

4) air resistance and gravity

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?