Question

If my mass is 196 lbm and I tackle one of my teammates - while decelerating from a velocity of 6.7 m/s to 0 m/s in 0.5 s, how much force (kN) do I impart to the teammate's body?

Answer 1

the force acting on the team mate is 1.19 kN.

Step-by-step explanation:

given,

mass = 196 lbm

while tackling, the deceleration is from velocity 6.7 m/s to 0 m/s

time taken for deceleration = 0.5 sec

F = mass × acceleration

acceleration =
`(0-6.7)/(0.5)`

= -13.4 m/s²

1 lbs = 0.453 kg

196 lbs = 196 × 0.453 = 88.79 kg

F = 88.79 × 13.4

F = 1189.786 N = 1.19 kN

hence, the force acting on the team mate is 1.19 kN.