If the 50-kg crate starts from rest and achieves a velocity of v = 4 m/s when it travels a...

If the 50-kg crate starts from rest and achieves a velocity of v = 4 m/s when it travels a distance of 5 m to the right, determine the magnitude of force P acting on the crate. The coefficient of kinetic friction between the crate and the ground is μk = 0.3.