B1: The coefficient of static friction between the road and a car tire is 0.7. The coefficient of kinetic friction is 0.55. The mass of a car is 1500 kg.
a. Calculate the maximum static friction force possible between the car’s tires and the road.
b. Calculate the kinetic friction force between the car’s tires and the road.
When you apply the brakes, the friction between the tires and the road is the net force (ignoring air resistance and other
complicating factors).
c. Calculate the car’s acceleration while braking if it doesn’t skid (i. e. static friction).
d. Calculate the car’s acceleration while braking if it does skid (i. e. kinetic friction).

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?

The slope of a velocity time graph over any interval of time gives the during that interval