WQ6.17 1/1 point (graded) You are trying to push a stalled 1000-kg car on a level road. Although you apply a horizontal force of 400 N to the car, it doesn't move. Assume that the friction coefficients for the car's tires are /4s = 0.8:14k = 0.5. Which force(s) also has a magnitude of 400 N? (more than one choice may be correct, so choose all that apply) the force the car exerts on you the friction force exerted by the car on the road the As times normal force the road exerts on you the 44, times normal force the road exerts on the car the friction force exerted by the road on you V WQ6.18 7/7 points (graded) You are trying to move a heavy crate (box). You increase your pushing force until the crate finally starts to move. But why does the crate move at all? Consider the graph on the right. Fr static ; kinetic 4 f, =F. +02 1 F. a) What is plotted on the y-axis? friction force applied force V b) What is plotted on the x-axis? friction force applied force > c) Explain what happens to the crate at points 2 to 4. Refer to the situation above: a person is pushing a heavy crate. applied force competing with friction force v d) At point 2, the person pushes the crate with a force that is the maximum static friction force. larger than smaller than the same as >
e)At point 3, the person pushes the crate with a force that is the same as the maximum static friction force. In response, the crate C accelerates O moves at constant speed remains at rest > f)At point 4, the person pushes the crate with a force that is the maximum static friction force. larger than smaller than the same as g)At point 4, in response to the applied force, the crate accelerates moves at constant speed remains at rest