Answer:
-2000 N
Explanation:
First of all, let's calculate the acceleration of the car:
where
v = 0 is the final velocity of the car
u = 10 m/s is the initial velocity of the car
t = 5 s is the time elapsed
Substituting,
where the negative sign means it is a deceleration.
Now we can calculate the average braking force:
where m=1000 kg is the mass of the car. Substituting,
and the negative sign means the force is opposite to the direction of motion of the car.
Answer : Noble Gases do not readily form compounds because they are chemically stable with 8 valence electrons.
Explanation :
Noble gases are the chemical elements that are present in group 18 in the periodic table.
The elements are helium, neon, argon, krypton, xenon and radon.
They are chemically most stable except helium due to having the maximum number of 8 valence electrons can hold their outermost shell that means they have a complete octet.
They are rarely reacts with other elements to form compounds by gaining or losing electrons since they are already chemically stable.
Hence, the noble Gases do not readily form compounds because they are chemically stable with 8 valence electrons.
Answer:
Only about 12%–30% of the energy from the fuel you put in a conventional vehicle is used to move it down the road, depending on the drive cycle.
Explanation:
