Answer:
Explanation:
Ke = 1/2mv2 = 1/2.10.(4)2=5.16= 80 J
Answer:
16m/s
Explanation:



Therefore, the speed after 8 seconds is 16m/s
The strong magnetic fields is Long rang attractive power Reuther then week magnetic field.
1 hour is 3600 seconds. In 2 hours, it would be 7200 seconds. Divide the amount of miles by seconds. 100/7200=.01388..