A car of mass 1.2 103 kg is traveling east at a speed of 30 m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.8 s. What is the average horizontal force exerted on the car while it is braking?
2006-10-22 11:32:54 · 2 answers · asked by activegirl 1 in Science & Mathematics ➔ Physics
The car accelerates -30m/s in 5.8s. or -5.2m/s^2.
F = ma = 1.2x10^3 x -5.2 = -6.2x10^3kgm/s^2.
2006-10-22 12:06:48 · answer #1 · answered by STEVEN F 7 · 0⤊ 0⤋
what's confusing about your question is the statement "field being pulled at an attitude of 36 stages". this may advise that the field is on a 36º slope, or that the field is on a horizontal floor and the rigidity acts at 36º above or below horizontal, notwithstanding, on a horizontal table, Fn has no horizontal aspect because it is what "favourite" ability: accurate angles to the horizontal. The rigidity of gravity is likewise at accurate angles to the horizontal; the rigidity of gravity is a common rigidity and has no horizontal aspect on a horizontal table.
2016-12-05 03:00:32 · answer #2 · answered by scacchetti 4 · 0⤊ 0⤋