Respuesta :
Answer:
25N
Explanation:
Find acceleration first
A=v-u/t
acceleration = 5/0.1s =50m/s^2
then find net force using f=mass x acceleration, which iin this case is 25N
Answer: 25 N
Explanation:
the fist hit by the black belt Alice in the Taekwondo has been given to have a mass of 0.5 kg which acquires a velocity of 5 m/s in a time of 0.1 sec, therefore, the average net force which is being applied to the fist can be calculated by the following method,
Given, mass m=0.5 kg, velocity v=5 m/s, time t=0.1 sec
As we know that, acceleration
[tex]a=\frac{v-u}{t}=\frac{5-0}{0.1}=50 \mathrm{m} / \mathrm{s}^{2}[/tex]
Thereby,
[tex]\text { Force }=\text { mass } \times \text { acceleration }=0.5 \times 50=25 N[/tex]
