a train is accelerating at a rate of 2.0km/hr/s. if it's initial velocity is 20km/hr, what is it's velocity after 30 seconds​

Current 1 of 8.4 a runs for 240 seconds and then stops. current 2 is 10.5 a. how long does current 2 have to un to deliver the same amount of charge as current 1? 88.28 192 s 2016 s 21,000 s

Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)

What properties of a moving object are used in determining the object's energy of motion