The diagram shows the view from above of two balls moving along a horizontal frictionless surface before they collide. The momentum of each ball is also shown. [Figure 10.0] The balls stick together during the collision. Which vector diagram represents the combined momentum of the balls after the collision?

A rock of mass 2m, travelling in deep space at velocity v, explodes into two parts of equal mass, one of which is the…

An object of fixed mass is initially at rest at point P. The object then moves away from point P with uniform acceler…

What is the definition of force?

Diffraction is a term used to describe one aspect of wave behaviour. What does diffraction make possible?

Monochromatic light of wavelength 5.30 × 10⁻⁷ m is incident normally on a diffraction grating. The first order maximu…

The electric field strength at a certain distance from an isolated alpha particle is 3.0 × 10⁷ N C⁻¹. What is the for…