Problem 3: A toy car rolls down a ramp at a constant velocity. The car's mass is m = 1.1 kg and the ramp makes an angle of 0 = 11 degrees with respect to the horizontal. Assume the rolling resistance is negligible. V = constant 0 ( Otheexpertta.com Part (a) What is the magnitude of the car's acceleration, a in m/s? Numeric : A numeric value is expected and not an expression. a= Part (b) What is the numeric value for the sum of the forces in the x-direction, EF, in Newtons? Numeric : A numeric value is expected and not an expression. EF= Part (c) Assuming the car experiences only air resistance in opposition to its motion, with magnitude F, Write an expression for the sum of the forces in the x-direction using the acceleration due to gravity, g, and the variables provided. Expression : EFE Select from the variables below to write your expression. Note that all variables may not be required. cos(a), cos(), cos(0), sin(a), sin(q), sin(0), a, B, 0, d, Fr, g, h, m, t Part (d) What is the magnitude of the force caused by air resistance, F, in Newtons? (Maintain the assumption that the car's velocity is constant.) Numeric : A numeric value is expected and not an expression. F, = Problem 4: Braces are used to apply forces to teeth to realign them. Shown in this 150 figure are the tensions applied by the wire to the protruding tooth. Randomized Variables T=22.5 N Fapp Otheexpertta.com What is the magnitude of the net force that is exerted on the tooth (in N) if the tension in the wire is 22.5 N? Numeric : A numeric value is expected and not an expression. Fapp Problem 5: A crate of mass m =40.1 kg is on a horizontal surface. Assume there is no friction between the crate and the surface. Two forces with magnitude F =10.1 N are applied to the crate, as shown. One force is horizontal, and the other makes and angle of = 20.1 . with horizontal, as shown. F Part (a) Write an expression for the magnitude of the acceleration of the crate in terms of F, m, and q. Expression : a = Select from the variables below to write your expression. Note that all variables may not be required. cos(a), cos(), cos(0), sin(a), sin(Q), sin(0), B, y, 0, d, F, g, h, m, n Part (b) What is the magnitude of the acceleration of the crate in m/s'? Numeric : A numeric value is expected and not an expression. 1 = m/s