A5.0-kg bag of groceries is tossed onto a table at 2.0 m/s and slides to a stop in 1.6 s .

modify the equation fδt=δ (mv) to find the force of friction.

express your answer to two significant figures and include the appropriate units.

-6.3 N

Explanation:

The equation we need to use is:

where

F is the force of friction, that slows down the bag

is the time of the motion

m is the mass of the bag

v is the speed of the bag

Since the mass of the bag does not change, we can rewrite the equation as

where we have:

Substituting and re-arranging the equation, we can find the force of friction:

where the negative sign means that the force is in the opposite direction to the motion of the bag.

i would think klcio3

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.