Answer Happy

!! URGENT !!
3. A polar robot at rest needs to move an object radially from 0.25m to 0.75m while rotating around its axis 60 degrees. The object must be at its required location in 2 seconds (it will still be moving at that time). Assuming constant radial and angular acceleration during the move (not net-radial and net-angular acceleration), determine: Notes: a) The minimum acceleration vector and magnitude at the beginning of the move. b) The minimum acceleration vector and magnitude at the end of the move. ● The calculations for scenarios with constant angular acceleration are just like linear constant acceleration scenarios except position is replaced with angle. Thus: 1 0 = 0o + Öyt + = Öt² 2 The units for the above equation can be in degrees or radians (though, I recommend radians as that is always the safer choice). The importance of the minimum acceleration is that you are finding the acceleration required for the object to reach its required position at exactly 2 seconds. You could achieve the position faster but that wouldn't be the minimum acceleration.
Problem 3: Polar Robot Problem 3: Object Motion. The orange square is the robot. The yellow circle is the object in its required position. The curve is the object's motion from beginning to end.
The constant velocities of commuter trains A and B are as shown. Also, A crosses the intersection 6 -minutes before B. Determine: a) The relative velocity of B with respect to A. b) The distance between B and A 12-minutes after B crosses the intersection. 66 km/h A ie 48 km/h B 25°