Question

Мальчик прыгнул в бассейн какова его скорость за 10 метров до воды если его вес равен 40кг а g=10

Answer 1

V=m×g
V=40×10=400Н-скорость мальчика

Answer 2

Calculation of Speed

To calculate the speed of the boy jumping into the pool, we can use the formula:

Speed = Distance / Time

Given: - Distance = 10 meters (the distance the boy jumps before entering the water) - Weight of the boy = 40 kg - Acceleration due to gravity (g) = 10 m/s^2

We need to find the time it takes for the boy to cover the distance of 10 meters before entering the water.

To calculate the time, we can use the formula:

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

Simplifying the equation, we get:

t = sqrt((2 * Distance) / g)

Substituting the given values:

t = sqrt((2 * 10) / 10) = sqrt(2) = 1.414 seconds

Now that we have the time, we can calculate the speed using the formula mentioned earlier:

Speed = Distance / Time = 10 / 1.414 = 7.07 m/s

Therefore, the speed of the boy when he jumps into the pool is approximately 7.07 m/s.

Please note that the above calculation assumes no air resistance and neglects any other factors that may affect the actual speed of the boy.