A child pulls a sled up a snow covered hill. The child does 405 J of work on the sled. If the child walks 15m up the hill, how large of a force must the child exert?

At an astronomical conference, an astronomer gives a report on a star that interests astronomers because of hints that it may have a planet around it.

What is Newton's law of universal gravitation?

Words that describe direction east, up, and left is it true or false

What is the potential energy of a 1-kilogram ball is thrown into the air with an initial velocity of 30m/sec?

Why do all the electrons in an iron atom not settle together into the lowest energy state? because.?

Calculate the speed for a car that went a distance of 125 miles in 2 hours time

A small 25 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of 1.85 m/s2. The car makes it one quarter of the way around the circle before it skids off the track.

A train travels 120 km in 2 hours and 30 minutes what is the average speed

How many constellations are there?