A sled travels 15 meters down a slope inclined at 30° with the horizontal. What is the horizontal displacement of the sled?

7.5

13.0

5.5

2.4

A 750g aluminum pan is removed from the stove and plunged into a sink filled with 10.0kg of water at 20.0c. the water temperature quickly rises to 24.0c. what was the initial temperature of the pan

When a star first begins the long path toward becoming a red giant, a layer of hydrogen around the core begins to undergo fusion. If this layer was too cold to do fusion throughout the main sequence stage, why is it suddenly warm enough

A 5 kg block is pulled across a table by a horizontal force of 40 n with a frictional force 8 n opposing the motion. calculate the acceleration of the object

How does a message travel across the gap at a synapse?

A wagon full of manure accidentally rolls down a driveway for 5.0m while a person pushes against the wagon with a force of 420 N to bring it to a stop. What is the change in kinetic energy for the wagon?

A golfer strikes a golfball on the ground

Amy walks 32 m right and then 12 m left. She turns and walks another 28 m right and then turns and walks 7 m left. What is Amy's displacement?

When a bow is stretched back and an arrow is shot what type of energy conversion has occured

Does the sun sun traces shortest path across local sky on june solstice

You are on earth, and have an object with a mass of 7 kg. with how much force does the earth's gravity pull the object downward?