How much work must be done on a 1,000 kg car to increase its speed from 1
m/s to 2 m/s?
o a. 1,500 j
o b. 1,000
o c. 2,000 j
od 10

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

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is