Please Show all Work with answer

An Inter City Express Iocomotvie pulls fourteen cars, each with a mass of 53,000 kg. What is the tension in the coupling between the third and forth cars when the acceleration of the train is 0.26 m/s^2?

Acceleration and Force

A 400-kg ice boat moves on runners on essentially frictionless ice. A steady wind blows, applying a constant force to the sail. At the end of an 8.0s run, the acceleration is 0.50 m/s^2. a. What is the acceleration at the beginning of the run? b. What was the force due to the wind? c. What retarding force must be appl ...continues

This is only to get checked!!!

This is how I showed the problem: a=vf-vo/t 0.5=vf-0/4=2 as vf. a=0-2/4=-0.5 F(wind)-F(app.)=m(a) 200-F(app.)=400(-0.5) Answer=400 email: buie144@yahoo.com and tell me if this is right. A 400-kg ice boat moves on runners on essentially frictionless ice. A steady wind blows, applying a constant force ...continues

Cirular Motion

show all work with answer please!!! A protractor is made so that the edge of its scale is 7.5 cm from the center point. If the scale is marked in degrees, how far apart are the marks along the edge?

Circular Motion

show all work with answer please!!! A 12-in. diameter phonograph record rotates about its center by one-quarter turn. a. Through how many radians has it turned? b. How far has a point on the rim moved?

Circualr Motion

show all work with answer please!!! The period of a stone swung in a horizonatl circle on a 2.00-m radius is 1.00 s. a. What is its angular velocity in rad/s? b. What is its linear speed in m/s? c. What is its radial acceleration in m/s^2.

Force needed for circualr Motion

show all work with answer please!!! Calculate the centripetal force on a 2000-kg automobile rounding a curve of 175 m radius at a speed of 50 km/h.

Force needed for circular Motion

show all work with answer please!!! A 0.208-kg toy whistle can be whirled in a horizontal circle of 1.00 m radius at a maximum of 3.00 rev/s before the string breaks. What is the force needed to break the string.

physics- dynamics, Newton's laws

A Saturn V rocket has a mass of 2.75 x 10^6 kg and exerts a force of 33 x 10^6 N on the gases it expels. Determine (a) the initial vertical acceleration of the rocket, (b) its velocity after 8 seconds, and (c) how long it takes to reach an altitude of 9500m. (Ignore the mass of gas expelled and assume g remains constant.

college Physics- friction on an inclined plane

A block is given an initial speed of 4.0 m/s up a 22° plane. (a) How far up the plane will it go? (b) How much time elapses before it returns to its starting point? Ignore friction.