Question

A 2kg object moving at 23 m/s crashes into a barrier. The object takes 0.03s to come to rest. What is the force exerted on the barrier?

Answer 1

Don't directly give answers pleas :P.. give them hints .. or they would just copy the answer and paste it in their assignments.. we wouldn't want that now do we? :P

Answer 2

Yea, this one was so easy I just posted the answer. However, you're right so I'll correct that :)

@Utecitec:
Use Newton's Second Law:
\[F=ma=m\frac{V_f-V_i}{\Delta t}\]

Answer 3

i think answer will be approximately 1533.33 N or simply 1533 N