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a dog is running to his master, a distance of 40 ft. it takes him 5 seconds to get to his master. how fast did the dog run?

Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?

Atruck with 34-in.-diameter wheels is traveling at 55 mi/h. find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes:

What do we mean by the event horizon of a black hole?