On earth acceleration due to gravity is 9.8 m/s2. If an apple with a mass of 0.47 kg falls out of a tree, it will strike the ground with a force of ? N .

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.

Ireally don't understand this, i'm really an idiot but i want to know how to figure this out. !