What is the bending of a wave as it passes at an angle from one substance, or material, to another?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s