Question

train starts in journey from station PSP rates at the rate of 2 metre per second square and reaches its maximum speed in 10 seconds it maintains speed for 30 minutes and uniformly to rest at the station to after the next 20 seconds calculate 1.maximum speed of the train 2. retardation and 3. the distance between station P and Q​

Answer 1

Please adjust with the quality if pictures. Note:the minus sign in front if acceleration in 3rd case indicates retardation (negative acceleration)