Explanation:
Mass of bumper cars, 
Initial speed of car A, 
Initial speed of car Z, 
Final speed of car A after the collision, 
We need to find the velocity of car Z after the collision. Let it is equal to 
. Using the conservation of momentum as :
So, the velocity of car Z after the collision is (-12 m/s). Hence, this is the required solution.
B: Energy lose
i say this because in order to change they lose energy.
a) since force = mass * acceleration
f= 900 * 0 (because constant speed = 0 acceleration)
similarly b) f = 0
Answer:attract each other
Explanation:
When two-sphere, one with a negative charge and another neutral is brought close together but do not touch then they try to attract each other.
This because of the polarization of the neutral sphere as it is placed in the vicinity of a negatively charged sphere. The negatively charged sphere will induce the positive charge in the neutral sphere and they will attract each other according to Columb law.
1.)Baking powder NaHCO3; sodium bicarbonate Used for baking for cooking, releases CO2 in reaction with other ingredients.
2.)Detergent Sodium sulphate, sodium hydroxide and phosphatecompounds Used for washing clothes.
3.)Toothpaste Calciuym carbonate, sodium flouride Used for cleaning teeth.
4.)Salt NaCl; Sodium Chloride Used in seasoning for cooking; also used as preservative.
5.)Vinegar C2H4O2
acetic acid, ethanoic acid
Used as preservative and for seasoning foods. Utilized for various household cleaning uses.
