Hi, need to submit a 1750 words paper on the topic Formulas on Physics. 42- .Copy of A bullet leaves a 28-in. rifle barrel at 2700 ft/s. .What was its time in the barrel in milliseconds? . . . . . . . . . . . t . = .  . ** . . = . . 0.864 mms43-A monorail train traveling at 22 m/s must be stopped at a distance of 120 m. What is stopping time? . . . . . . . . . . . 0 . = . (22 m/s)2 . - . 2a (120) . . . . —_ . . . . a . = . 2.0167 m/s2 . . . . . . . . . . . 0 . = . V0 . - . at . . . . —_ . .  . .0 . = . 22 m/s . - . (2.0167 m/s2)*t . . . . —_ . . .  .t . = . 10.9 secs44-Three masses, 2 kg, 4 kg, and 6 kg, are connected (in order) by strings and hung from the ceiling with another string so that the largest mass is in the lowest position. . If the system feels only an acceleration upward at 4 m/s2, what is the tension in the cord that separates Block B and Block C? . . . . . . . . . . . FBD about C: . . . . TBC . - . 6 kg (9.81 m/s2) . = . 6 kg (4 m/s2) . . . . . . . . . . . —_ . . . . TBC . = . 82.86 N45-Three masses, 2 kg, 4 kg, and 6 kg, are connected (in order) by strings and hung from the ceiling with another string so that the largest mass is in the lowest position. .What is the tension in the cord that separates Block A and Block B?T(top) . - . 6 kg (9.81 m/s2) . = . (2 kg + 4 kg + 6 kg) ( 4 m/s2) . .T(top) . = . 106.86 N . . . . . . . . . T(top) . - . TAB . - . 2 kg (9.81 m/s2) . = . 2 kg (4 m/s2)—_ . . . . TAB . = . 79.24 N46-Find the mass of a body if a resultant force of 400 N causes it to decrease its velocity by 4 m/s in 3 s. . . . . . . . . . . . a . = .  . . = . . 1.333 m/s2 . . . . and . . . . F . = . ma . . . —_ . . . 400 N . = . m (1.333 m/s2) . . . . . . . . . . . —_ . . . . m . = . 300 kg47-A 20-kg mass hangs at the end of a rope. .Find the acceleration of the load if the tension in the cable is 260 N. . . . . . . . . . . . F . = . ma . . . . —_ . . . . 260 N . = . (20 kg) (a) . . . . —_ . . . . a . = . 13 m/s248-Find the weight of a body if a resultant force of 400 N causes it to decrease its velocity by 4 m/s in 3 s. . . . . . . . . . . . A . = .  . . = . . 1.333 m/s2 . . . . —_ . . . . 400 N . = . m (1.333 m/s2) . . . . . . . . . . . —_ . . . . m . = . 300 kg . . . . and . . . . W . = . mg . = . (300 kg) (9.81 m/s2) . = . 2943 N49-Two masses (m1=2kg and m2=8kg), connected by a cord, hang straight down from either side of a light frictionless pulley. .What is the .acceleration of the system? . . . . . . . . . . . 2(9.81 m/s2) . - . 8(9.81 m/s2) . = . (a) (2 . + . 8) kg . . . . —_ . . .  .a . = . -5.9 m/s250- .An 800-kg elevator is lifted vertically by a strong rope. .Find the acceleration of the elevator if the rope tension is 7840 N. .  .  .  .  .  .

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