Acar travels at 20 meters per second.
what is its rate in kilometers per hour?
72 kilometers per hour
5.6 kilometers per hour
1.2 kilometers per hour
56 kilometers per hour

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."

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

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished