8. On Earth, a ball is dropped and falls 2.0 m in a vacuum. The acceleration of the ball at 1.0 m from the point the fall s 10 m/s^2. What is the
acceleration of the ball at 0.5 m?
0 10 m/s^2
O 5.0 m/s^2
020 m/s^2
0 15 m / s^2

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

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

If a stone with an original velocity of 0 is falling from a ledgeand takes 8 seconds to hoybthe ground whays the final velocity of the stone