Answer:

Explanation:
Maximum distance after which the motorist must have to stop is given as

now the distance after which the vehicle will stop on applying breaks is given as



now remaining distance is given as


now reaction time is given as



Answer: The correct answer is "A mechanical wave travels through matter, while an electromagnetic wave travels through empty space".
Explanation:
The difference between a mechanical wave and an electromagnetic wave are as follows:
Electromagnetic waves are produced by the vibrations of the charged particles while the mechanical waves are caused by the wave amplitude.
Electromagnetic wave does not need medium while the mechanical wave need medium to travel. Mechanical wave can travel in solid, liquid and gas. Electromagnetic wave travels in vacuum.
Therefore, a mechanical wave travels through matter, while an electromagnetic wave travels through empty space.
<span>Boyle's Law, in short, states that the volume of a gas is inversely proportional to its pressure AS LONG AS THE TEMPERATURE REMAINS UNCHAnged </span>