Question

Тело массой 700 г изменило свою скорость на 18 км/ч за время 5 сек,какая сила это вызвала? распишите с дано и формулами пожалуйста

Answer 1

Given:

- Mass of the body: 700 g - Change in velocity: 18 km/h - Time taken: 5 seconds

Formula:

The force exerted on an object can be calculated using Newton's second law of motion, which states that the force (F) is equal to the mass (m) multiplied by the acceleration (a):

F = m * a

Acceleration can be calculated using the formula:

a = (v - u) / t

Where: - v is the final velocity - u is the initial velocity - t is the time taken

Solution:

1. Convert the mass from grams to kilograms: - 700 g = 0.7 kg

2. Convert the change in velocity from km/h to m/s: - 18 km/h = 5 m/s (since 1 km/h = 1000 m/3600 s)

3. Calculate the acceleration: - a = (v - u) / t - a = (5 m/s - 0 m/s) / 5 s - a = 1 m/s^2

4. Calculate the force: - F = m * a - F = 0.7 kg * 1 m/s^2 - F = 0.7 N

Therefore, the force exerted on the body is 0.7 Newtons.

Calculation Steps:

- Mass: 700 g = 0.7 kg- Change in velocity: 18 km/h = 5 m/s- Time taken: 5 seconds - Acceleration: a = (5 m/s - 0 m/s) / 5 s = 1 m/s^2 - Force: F = 0.7 kg * 1 m/s^2 = 0.7 N

Please note that the provided search results did not directly provide the formulas or calculations for this specific problem. However, the formulas and calculations used are based on well-established principles of physics.