Newton's laws

On a highway curve with radium 50m, the maximum centripedal force that can act on a 1,000kg car going around the curve is 8,000 Newtons. What speed limit should be posted for the curve so that cars can negotiate it safely?

Energy and Conservation Laws

Which has the larger linear momentum: A 2,000-kg houseboat going 5 m/s or a 600-kg speedboat going 20 m/s?

Energy and Conservation Laws

A 3,000-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 9 m/s. What was the original speed of the truck before the collision?

Energy and Conservation Laws

A rock weighs 100 lbs and is lifted 1 ft by a lever. How much work is done?

Energy and Conservation Laws

While in orbit about the earth, a space shuttle's mass is 80,000-kg and its speed is 7,900 m/s. What is its kinetic energy?

Energy and Conservation Laws

A student drops a water balloon out of a window 12m above the ground. What is its speed when it hits the ground?

Physics of Matter

A bicycle tire pump has a piston with area 0.44 in (exponent 2). If a person exerts a force of 30lbs on the piston while inflating a tire, what pressure does this produce on the air in the pump?

Physics of Matter

The water in the plumbing of a house is at a guage pressure of 300,000 Pa. What force does this cause on the top of the tank inside a water heater if the area of the top is 0.2m (exponent 2)?

Physics of Matter

A certain part of an aircraft engine has a volume of 1.3 ft cubed. Find the weight of the piece when it is made of aluminum.

Physics of Matter

A small statue is recovered in an archaeological dig. Its weight is measured to be 96 lbs and its volume is 0.08ft cubed. What is the statue's weight density?