Correctly describe the position of the intake and exhaust valves during most of the power stage in a four cycle gas engine

Matt is driving down 7th street. he drives 150 meters in 18 seconds. assuming he does not speed up or slow down, what is his speed?

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?