David rowed a boat upstream for three miles and then returned to point he started from. the entire journey took four hours. the speed of the stream is one mile per hour. find david's speed in still water. (hint: speed = distance ÷ time, upstream speed = speed of the boat – speed of the stream, and downstream speed = speed of the boat + speed of the stream)
david's speed in still water is miles per hour.

A3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular? a 3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular?

If forces acting on an object are unbalanced. true or false

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)