Two children pull a third child on a toboggan (total mass of child and toboggan = 75 kg) over frictionless ice (shown from the top view down in the figure below). Assuming that they pull on ropes that are parallel to the ground, determine the magnitude of the net force (force forward) exerted on the toboggan. Round to the nearest TENTH & do NOT include the UNIT in your response! *

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

Which lists the organs in the correct order as food passes from the mouth to anus?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?