Two cars 200 m apart accelerate towards one another where do they meet? Car 1 has an acceleration of 1.9 m/s/s and Car 2 has an acceleration of 2.0 m/s/s.

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Can you match these to the correct definition

Photons with the highest energy have the longest period