Can a coefficient of friction be a whole number? Or does it have to be a decimal?

A 10kg sled slides down a frictionless icy hill at an angle of 25 degrees. Calculate the parallel component of the sled's weight. Calculate the acceleration of the sled.

Would b) require the force of gravity, or all forces of gravity (parallel, perpendicular, regular, etc)?

A car breaks on an icy road. At a point, the car's brakes apply a force before the car skids. 

Would this be calculating the coefficient of static or kinetic friction?

The solutios to nx²+px+q=0 are 4 and -2\5 what information does this tell you about the graph of f(x)=nx²+px+q

A vehicle collision produced -1250N net force. What is the acceleration of a 55.0 kg passenger in the car?

What do these texts suggest to you about the forces that inhabit or encourage an individual's actions?

 Given the reaction 3 NO2(g) + H2O(l) 2 HNO3(l) + NO(g) rH = 72.0 kJ,  calculate the molar enthalpy of reaction, rH for H2O(l)

Could you please help prepare my 5th grade daughter for her spelling Bee contest asap

When the polynomial 3y^3-4y^2+by+6 is divided by y+2, the remainder is -40

For safety reasons, a ladder is position, so that the distance between its base in the wall is no longer than 1/4  the length of the ladder. To the nearest degree what is the greatest angle of inclination allowed for a ladder?