1. A 75 kg man is in a car travelling at 22m/s. a) Find its kinetic energy.
The car strikes a concrete wall and comes to rest after the front of the car has collapsed 1.5m.
The man is wearing a seat belt and harness. What is the average force exerted by the belt and
harness during the crash

answer: (431,2)

step-by-step explanation:

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer