3. A body moves in a straight line with constant acceleration. Its speed increases from \(17 \mathrm {~ms} ^ { - 1 }\) to \(33 \mathrm {~ms} ^ { - 1 }\) while it travels a distance of 250 m . Find

1. the time taken to travel the 250 m ,
2. the acceleration of the body. The body now decelerates at a constant rate from \(33 \mathrm {~ms} ^ { - 1 }\) to rest in 6 seconds.
3. Find the distance travelled in these 6 seconds.