Question

Футболист, ударяя мяч массой 500 г, сообщает ему скорость 36 км/ч. Если удар длился 20 мс, то сила удара

Answer 1

Формула импульса P=mU=10*0,5=5
(36км/ч=10м/с , 500г=0,5кг)
Затем вторая формула импульса P=Ft, отсюда F=P/t=5/0,2=25Н
(2мс=0,2с)

Answer 2

Calculation of the Force of the Kick

To calculate the force of the kick, we can use the equation:

Force = mass × acceleration

In this case, the mass of the ball is given as 500 grams, which is equivalent to 0.5 kilograms. The acceleration can be calculated using the formula:

Acceleration = change in velocity / time

The change in velocity is given as 36 km/h, and the time of impact is given as 20 milliseconds.

Let's calculate the force of the kick step by step:

1. Convert the velocity from km/h to m/s: - 36 km/h = 36 × (1000 m / 3600 s) = 10 m/s

2. Convert the time from milliseconds to seconds: - 20 milliseconds = 20 / 1000 = 0.02 seconds

3. Calculate the acceleration: - Acceleration = change in velocity / time = 10 m/s / 0.02 s = 500 m/s²

4. Calculate the force: - Force = mass × acceleration = 0.5 kg × 500 m/s² = 250 Newtons

Therefore, the force of the kick is 250 Newtons.