A 7 kg bicycle moving at 11 m/s strikes a stationary 2000 kg car. The bicycle
bounces backwards at 3 m/s. What is
the velocity of the car after impact?

Which of the following correctly describes the early view of catastrophism?

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?