Answer:

Explanation:
The speed of the actor before the collision is found by means of the Principle of Energy Conservation:



The speed after the inelastic collision is obtained by using the Principle of Momentum Conservation:


Lastly, the maximum height is determined by using the Principle of Energy Conservation again:



Answer:
speed of car = 95 km/h
speed of truck = 75 km/h
relative speed of car with respect to truck = 95 - 75 = 20 km/h
now we will convert it into m/s
now time to cross the truck will be given as
time = 19.8 s
so it will take 19.8 s to cross the truck
Explanation:
Answer:
ответ 1.25 × 10‐³ и вот ваш ответ
#3, they both come after infared and are not harmful to living cells.