A runner is running on a circular track, which is 200 m in circumference. Find the magnitude of his acceleration in m/s2 when he is running at a constant speed of 10.8 m/s.

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?

Frequency of electromagnetic waves that a radio station is assigned is called

Matter that emits no light at any wavelength is called