Calculate the work needed to push a block a distance of 10 meters of 8N of force is pushing the block. a) 8 J
b) 80 J
c) 0.8 J
d) 800 J

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.