A teenager was riding a hoverboard with a velocity of 0.90 meters per second before heading to the store 91 meters away with a constant acceleration of 0.15 m/s2. What was the final
velocity of the teenager on the hoverboard?

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

What is the angular momentum of the bar about the axle?

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)