1. The velocity of a particle at t = 2 s is 50 m/s ; at t = 6 s, it is 50 m/s . Calculate the average acceleration during the time interval.

2. A motorcycle accelerates at 1.6 m/s2 to reach a velocity of 20 m/s in a distance of 50 m. Determine its initial velocity and time elapsed

3. A projectile leaves the top of a tower with a horizontal velocity of 13 m/s. Determine its horizontal displacement and vertical displacement if it lands at 70 from horizontal.

4. A conveyor 60 m long is inclined at an angle of 18 to the horizontal and deposits material 8 m below its top end. Determine the distance and displacement of material carried by this conveyor.