If the coefficient of static friction between the coffee cup and the roof of the car is 0.26, what is the maximum acceleration the car can have without causing the cup to slide? Ignore the effects of air resistance.

Explanation:

When the cup slides, the car acceleration would be equal to the acceleration caused by the friction of the roof on the cup, which generated by normal force, which equals to gravity force on the cup.

So the equation of friction force is as the following:

where m is the mass of the cup, g = 9.81 m/s2 is the gravitational acceleration, and is the friction coefficient

Newton's 2nd law for when the cup slides

the answer is b

explanation:

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.