Question

a force of 50n is applied to a horizontal rope attached to a 40kg sled that can slide freely on ice, pulling the sled a distance of 3.0 m. What speed does the sled have at the end of the 3.0m if it was initially at rest?

Answer 1

fisrt solve the acceleration of the sled, using the formula
F = ma
50 N = (40 kg) a
a = 1.25 m/s^2

then using the formula
2ax = vf^2 - v0^2
where a is the acceleration
x is the distance
vf is the final velocity
v0 is the initial velocity
2(1.25) ( 3 m) = vf^2 - (0)^2
vf = 2.74 m/s is the speed of the sled at 3 m