emmy38
emmy38
02-01-2017
Physics
contestada
What force do the brakes exert on the cart?
Respuesta :
AL2006
AL2006
02-01-2017
Newton's second law of motion:
Force = (mass) x (acceleration)
= (100 kg) x (-5 m/s²)
=
-500 Newtons .
I made the acceleration negative because the cart is slowing down.
The force came out negative because it's in the direction opposite
to the cart's motion.
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