Answer:
The speed of light changes as it moves between media. This causes refraction. Angles of refraction can be calculated using known speeds or wavelengths. Beyond the critical angle, light is reflected.
F= ma; a= F/m
a = 26.4 N/60 kg= 0.44 m/s^2
Answer:
no one ever amswers my questions
Answer:
B
Explanation:
Acceleration = rate of change in velocity
a = (21-12)/(0.45) = 20cm/s^2