A 75. 0-kg painter climbs a ladder that is 2. 75 m long leaning against a vertical wall. The ladder makes a 30. 0° angle with the wall. How much work does gravity do on the painter?.

Which type of college offers open admissions? a. a liberal arts collegeb. a four-year collegec. a two-year community colleged. a public university

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

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