Assertion: On a rainy day, it is difficult to drive at high speed. Reason: The value of the coefficient of friction is lowered due to wetting of the surface. a) If both assertion and reason are true and the reason is the correct explanation of the assertion b) If both assertion and reason are true but the reason is not correct explanation of the assertion c) If assertion is true, but the reason is false d) If both assertion and reason are false

Assertion: On a rainy day, it is difficult to drive at high speed. Reason: The value of the coefficient of friction is lowered due to wetting of the surface. a) If both assertion and reason are true and the reason is the correct explanation of the assertion b) If both assertion and reason are true but the reason is not correct explanation of the assertion c) If assertion is true, but the reason is false d) If both assertion and reason are false

Similar questions

5) A box with mass m=1.25 kg rests on the top of a bar. The coefficient of static friction between the box and the bar is μs=0.73 and the coefficient of kinetic friction is μk=0.39. a) Write an expression for Fm the minimum force required to produce movement of the box on the top of the bar. b) Solve numerically for the magnitude of the force Fm in Newtons. c) Write an expression for a, the box's acceleration, after it begins moving. (Assume the minimum force, Fm, continues to be applied.) d) Solve numerically for the acceleration, a in m/s².
What happens to the normal force and the friction force when the box is pulled at an angle? Compare results from part 1 and part 1 of the tables
you need to push the couch 4 m to the other side of the room. After the initial push to get it going you push on the 90 Kg couch with a steady horizontal force of 600 N. The coefficient of kinetic friction between the couch and the floor is 0.6. 1) what is the magnitude and direction of the fictional force on the couch? 2) what is the magnitude and direction of the net force on the couch? 3) what is the magnitude and direction of the acceleration of the couch?
Which of the following statements about the force of friction are accurate? (Choose all that apply) The force of friction decreases as velocity increases. Increasing the surface area of an object will increase the force of friction. All objects have the same coefficient of friction with each other. The force of friction acts in the direction opposite of motion. The force of friction is determined, in part, by the magnitude of the normal force. Increasing the mass of an object will increase the force of friction.
2. A chain consists of identical links, each with a mass of 2.5 kg. You grab the top link and hold the chain at rest so that it hangs vertically. a) Draw a free body diagram of the bottom three links (labeled 1, 2, 3). Label all forces and use double subscript notation to denote which object exerts the force and which object is experiencing the force. b) Find the magnitude of the force exerted on link 1 by link 2, in Newtons. c) Find the magnitude of the force exerted on link 2 by link 3, in Newtons.
Which of the following are correct statements of Newton's 3rd law? Choose all that are correct. Any time an object feels a force (like gravity), it also feels a reaction force (like a table pushing up). Any time an object exerts a force on a second object, that second object exerts an equal and opposite force on the first object. The acceleration of an object is equal to the net force exerted on the object divided by its mass. If an object is at rest, that means 2 equal and opposite forces are acting on it.
Question 4 Which of the following best describes the directions of friction and normal force? Your answer: Friction is always horizontal and normal force is always vertical. Friction is always horizontal and normal force is always perpendicular to the surface. Friction is always parallel to the surface and nomal force is always vertical. Friction is always parallel to the surface and normal force is always perpendicular to the surface. There is no consistent pattem.
Calculus
Two blocks A and B are in contact with each other on a table without friction. A horizontalforce equal to 3 Newtons is applied to block A (the larger block).a) If M_a =4kg and M_b=1 kg Find the magnitude of the force between the blocksb) If now the force is applied to block B (instead of A), what is the force between theblocks?c) Explain in your own words what happened (the results of (a) and (b)
Consider an object on an incline where friction is present. The angle between the incline and the horizontal is θ and the coefficient of kinetic friction is μk. a.) Find an algebraic expression for the acceleration of this object. Treat down the incline as the positive direction. b.) Calculate the acceleration, in meters per second squared, of this object if θ = 31° and μk = 0.34. Treat down the incline as the positive direction.