The wheel turns through angles from 1.2 rad to 5.2 rad during a time t = 1.04 s, calculate the angular velocity of the wheel

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.