A cardboard box slides  along a wood floor with an initial velocity of 15.0 m/s ,  and comes to rest after  traveling 30 m along  the floor. What is the coefficient of kinetic friction between the floor and the box?  Assuming g=10m/s2{"version":"1.1","math":"m/s2"} What is the acceleration of the cardboard when it slides along the floor?

A student is pulling a crate with a mass of 66.6 kg along a horizontal frictionless floor with a rope that’s inclined at an angle θ = 30.0° above the horizontal as shown. The tension force is measured to be 239 N. What is the magnitude of the normal force on the crate from the floor, in Newtons? Use g = 10.0 m/s2.    Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

For a short period of time, the frictional driving force acting on the wheels of the 2.3-Mg van is FD = (600+2) N, where t is in seconds. (Figure 1) Figure FD 1 of 1 Part A If the van has a speed of 22 km/h when t= 0, determine its speed when t = 5 s. Express your answer to three significant figures and include the appropriate units. CHμA V = 3.32 Submit m Provide Feedback S ? Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining

What is the mass of the box?