7) In an automobile safety test, a shoulder and seat belt exerts a force of 422N directly backward, and a force of 369N backward at an angle of 20.0° below the hori- zontal on a dummy. If the belt holds the dummy from moving farther forward, what force did the dummy exert on the belt? 422 N 20.00 369 N

Listen When a 17.0-kg crate is pushed across a frictionless horizontal floor with a force of 270.0 N, directed 20.0° below the horizontal, the magnitude of the normal force of the floor on the crate is N. 20.0

37. A suitcase with mass 18 kg is pulled at a constant speed by a handle that makes an angle θ with the horizontal. The frictional force on the suitcase is 27 N and the force applied on the handle is 43 N. (a) Determine the value of the angle, θ. (b) Determine the normal force exerted on the suitcase.

A force of 25 N acts to the right on a 100.0 kg block which is at rest on a rough surface( Us = 0. 200). The frictional force acting upon the block is: 171 N 196 N None of the above 25 N

Andrea pulls a 25 kg box horizontally from rest while exerting a constant horizontal force, displacing the box 3.0 m in 10 s. Neglecting friction, the force Andrea exerts on the box is approximately.

7)A desk with a mass of 75.0 kg sits on a floor, and the coefficient of static friction between the two surfaces is 0.40. Draw a force diagram for the problem and how much force must someone apply in a direction horizontal to the surface of the floor to get the desk moving?

19 of 31 Listen> A child pushes a desk with a force of 15 N to the right. The desk accelerates to the right. Which of the following statements correctly represents Newton's third law and the interaction between the child and desk? The desk exerted slightly more than 15 N of force on the child, but the force is directed to the left. The desk exerted slightly less than 15 N of force on the child, but the force is directed to the left. The desk exerted exactly 15 N of force on the child, but the force is directed to the left. The desk did not exert any force on the child. Novt

2) A cat with a mass of {04} kg is at rest on a roof at an angle of 34° from horizontal.  The coefficient of static friction between cat paws and roof tiles is 0.70, and gravity is 10 N/kg today.    a) Draw a Force Body Diagram of the cat, labelling and calculating all forces.      b) Draw a 2nd  FBD of the cat if the angle of the roof was 74° from horizontal (steeper).  Will the cat be able to stay on the roof at this angle?  Justify with calculations why or why not? c) If the coefficient of kinetic friction between cat and roof were zero, what would be the cat’s acceleration on the 74° roof?