14. a particle in uniform acceleration travels 100 m after starting from
rest in 10 seconds. its acceleration is
(a) 2 m/s2
(b) 4 m/s2
(c) 1 m/s2
(d) 20 m/s2

How does convection affect our atmosphere? our layers of earth? our oceans?

Which two objects have the greatest gravitational force acting between them

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?