Question

Мяч массой 0.8 кг после удара, продолжавшегося 0,03 с, приобретает скорость 40 км / час. Определить среднюю силу удара.

Answer 1

mv = Ft

F = mv/t = 0.8*11.12/0.03 = 296 H

Answer 2

Calculation of Average Impact Force

To determine the average impact force, we can use the formula:

Average Force = Change in Momentum / Time

The change in momentum can be calculated using the formula:

Change in Momentum = Mass * Change in Velocity

Given: - Mass of the ball (m) = 0.8 kg - Change in velocity (Δv) = 40 km/h = 40,000 m/3600 s = 11.11 m/s - Time of impact (t) = 0.03 s

Using the above values, we can calculate the average impact force as follows:

Change in Momentum = Mass * Change in Velocity = 0.8 kg * 11.11 m/s = 8.888 kg·m/s

Average Force = Change in Momentum / Time = 8.888 kg·m/s / 0.03 s = 296.3 N

Therefore, the average force of impact is approximately 296.3 Newtons.