-- pass the light through a lens
The path of the light is bent (refracted) to a new direction.
-- bounce the light off a shiny surface
The light is sent back (reflected) in the direction from which it arrived.
-- pass the light through a prism
The light is spread out according to the different wavelengths
that may be in it.
-- put something black in the light's path
The light is completely absorbed and is never seen again.
-- turn the light off
The source stops emitting light.
-- throw a towel over the lamp
The light is absorbed in the towel, and not seen outside of it.
Answer:
4.75 m/s^2
Explanation:
The rate of change of velocity is called acceleration.
initial velocity, u = 15 m/s along east
Final velocity, v = 40 m /s along north
time, t = 9 s
Change in velocity,
Acceleration,
Magnitude of acceleration
= 4.75 m/s^2