Homework Statement
Five dogs, each having a mass of 30kg, pull a 250kg sled horizontally across the snow (coefficient of kinetic friction = 0.14).
How much force must each dog exert in order to move the sled at a constant velocity?
Homework Equations
Force of kinetic friction =...
Homework Statement
The coefficient of sliding friction between two materials is 0.35. A 5.0 kg object made of one material is being pulled along a table made of another material. What is the force of friction?
I'm fairly certain I solved the problem correctly, the thing is, I should be...
Homework Statement
An object that is thrown covers a distance of 8.59 m. If the angle at which it is thrown is 23 degrees, what is its initial velocity?
Homework Equations
5 kinematic equations:
a = (v2-v1)/t
d=0.5(v1+v2)t
d=v1t+0.5at^2
d=v2t-0.5at^2
v2^2=v1^2+2ad
Equation for...
Homework Statement
An object with an initial velocity of 10.0m/s [S] moves 720m in 45s along a straight line iwht constant acceleration. For the 45s interval, find its average velocity, final velocity and acceleration.Homework Equations
5 Kinematic equations:
d=1/2(Vf+Vi)t
Vf=Vi+at...