After being pushed and released, a 50kg crate slides across a factory floor. Friction on the sliding crate is 200N. what is the crate's acceleration?
what are the equations and steps to find the answer?
2007-12-06 15:18:46 · 3 answers · asked by Catherine 2 in Science & Mathematics ➔ Physics
F=ma
But, 200N is pressing against it, causing it to deccelerate.
-200N = 50kg * a
a= -4 m/s^2
2007-12-06 15:23:52 · answer #1 · answered by Alex S 2 · 0⤊ 0⤋
Force = mass x acceleration and in this case the value of acceleration will be negative since frictional force opposes the crate's sliding motion.
2007-12-06 23:35:14 · answer #2 · answered by Swamy 7 · 0⤊ 0⤋
the only thing that the crate is doing is decelerating as it moves. its slowing down. the 'slow down' force is friction and its given as 200 newtons. set it equal to mass x accel and solve for accel
200= 50 x accel
put the units as meters per second square and make sure you understand that accel points in the opposite direction of motion. so IF the direction of motion is given the positive x direction THEN accel must be in the negative x direction
2007-12-06 23:27:22 · answer #3 · answered by Anonymous · 0⤊ 0⤋