Question

Масса яблока 40г. С какой силой оно притягивается Землей? Сколько времени плод будет падать с яблони, если ветка, на которой он висел, находилась на высоте 2,4 м?

Answer 1

Дано:м=0.4 кг,g=10 м/с2
,h=2.4 м
Найти 
F=?
Решение 
1. F=mg=0.4*10=4H

Answer 2

Mass of the apple and the force of gravity

The mass of the apple is given as 40g. To determine the force with which it is attracted to the Earth, we can use Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a). In this case, the acceleration is due to gravity, which is approximately 9.8 m/s^2 on the surface of the Earth.

Using the formula F = m * a, we can calculate the force:

F = 0.04 kg * 9.8 m/s^2 = 0.392 N

Therefore, the apple is attracted to the Earth with a force of 0.392 Newtons.

Time taken for the apple to fall from a tree branch

To calculate the time taken for the apple to fall from a tree branch, we can use the equation of motion for free fall. The equation is:

h = (1/2) * g * t^2

Where: - h is the height from which the apple falls (2.4 m in this case) - g is the acceleration due to gravity (9.8 m/s^2) - t is the time taken for the apple to fall

Rearranging the equation to solve for t, we get:

t = sqrt(2h / g)

Substituting the values, we have:

t = sqrt(2 * 2.4 m / 9.8 m/s^2) = sqrt(0.4898) = 0.7 seconds (approximately)

Therefore, it will take approximately 0.7 seconds for the apple to fall from the tree branch.