Answer: If a velocity time graph is horizontal then the velocity is constant and there is no acceleration.
Explanation:
kinetic energy is energy that it possesses due to its motion.
Answer:
See the explanation.
Explanation:
The speeds of sound depend upon the temperature of the medium. As the temperature increased in the afternoon, the speed of sound increases. Then the time taken by reflected sound will be less than 0.1 sec in the afternoon. And to hear an echo the time gap between an original sound and reflected sound must be at least 0.1 sec. That is why the student could not hear the echo at all in the afternoon.
It is d because albert einstein was physics scienctist
