Lee has been moving a crate that has a mass of 125 kg and required 120 j of work to move. the crate was moved a distance of 20 meters in 30 seconds. what was the power output?

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

What equation is used to calculate the weight of an object on a plant ?

Am i correct on these two physics questions?