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Abaseball picther can throw a ball at about 90 miles per hour, v = 40 m/s, on solid rock ground. we now put him into space. when he throws the ball, which weighs mb = 0.15 kg moves away from himat the same speed. how long does it take the ball thrown in space to travel the 30 meters to the batter? he weighs mp = 100kg

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative