The equation of a progressive wave is given by y = 5 sin(100t - 0.4x)
where y and x are in m and t is in s. Find
a) The amplitude of the wave.
b) The wavelength of the wave.
c) The frequency of the wave.
d) The velocity of the wave.

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Acar of mass 800kg is moving at a speed of 2.2m/s.