A father distributed 3000 reais to his children in proportion to their ages, which are 6 and 9 years old. How much did the youngest receive?
A stone is thrown vertically upwards into a vacuum, where the acceleration due to gravity is g = 9.8 m/s2. At the highest point of its trajectory, the speed is zero. At this point the acceleration of the stone is:
Since A= {1,3,4,5,6,7} and B= {2,4,6,8} we can say that: A υ B is equal:
Select an option:
The.
{1,2,3,4,5,6,7,8}
B.
{4,6}
w.
{ }
d.
{1,3,5,7}
If P(x)=x3+2x2+x-4, the numerical value of P(x), for x= -2, is:
The.
-18
B.
14
w.
12
d.
-6
A family is moving and needed to move a box weighing 40 kg into the truck. She was moved by her two sons simultaneously, with the first applying a force of 60 N and the second applying a force of 20 N. Thus, find the value of the resultant force and the acceleration of the box.
A worker exerts a constant force of 150N to pull a wheelbarrow over a distance of 30m in a straight line, horizontally. If the angle between the direction of the force and the direction of the steering is 60°, what is the work done by the worker?
(Data: cos60°= 0.5)
