A train travels 55 km south along a straight track in 34 minutes. What is the train's average velocity in kilometers per hour?

What type of potential energy does a roller coaster have? Explain

A force applied to an object causes the object to accelerate at 2 m/s^2. suppose another object with twice the mass is applied twice the force. the acceleration of this second object is

A kid at the junior high cafeteria wants to propel an empty milk carton along a lunch table by hitting it with a 3.0g spit ball. If he wants the speed of the 40g carton just after the spit ball hits it to be 0.30 m/s, at what speed should his 3.

What magnitude of force does a ball of mass 0.75 kilograms need to be hit so that it accelerates at the rate of 25 meters / second^2

In what direction does an applied force move an object? In the same direction as the force Independent of the force In the opposite direction of the force Perpendicular to the force

A ramp with a mechanical advantage of 8 lifts objects to a height of 1.5 meters how long is the ramp

Sodium, atomic number 11, forms an ionic bond with an atom of an unknown element. What is one possible choice for the ther element in the compound?

A ship leaves the island of Guam and sails a distance 255 km at an angle 49.0 o north of west. Part A: In which direction must it now head so that its resultant displacement will be 125 km directly east of Guam?

What is the molecular geometry of a methane (CH4) molecule?

Why do scientist use radioactive decay to figure out how old stuff is