Answer: if 5N is applied for 5 seconds then it would move at a constant speed for one second then decrease in speed
Answer:
Explanation:
Deceleration of solid disk = g sin10/1 + k²/r² = g sin 10 / 1 + 1/2 = g sin 10 x 2/3
[ k is radius of gyration of disk which is equal to( 1/√2)x r ]
deceleration a = -1.1345 m/s²
v = u - at , t = u / a = 1.5 / 1.1345 = 1.322 s.
Because it generates enough momentum to keep the train going with out really having to speed up
I think that number five is lithium
