A block of mass 10kg from rest experiences a constant force of 10N for 5 seconds across a level frictionless surface, after the force is taken off it travels 20 meters until it reaches an area with frictions, still on a level surface. It takes 8 seconds for the block to stop: What is the normal force of the block? What is the force due to kinetic friction? What is the coefficient of kinetic friction?

The 0.16 kg particle has a speed v = 11.9m / s as it passes the position shown. The coefficient of kinetic friction between the particle and the vertical plane track is mu*k = 0.24 Determine the magnitude of the total force exerted by the track on the particle What is the change in speed v (positive if speeds up, negative is slows down) of the particle?

Two cars descended the sloping road at an angle of 30° where When the first car stopped completely because of a red light, the second car behind it 20 meters started to brake, but did not stop immediately until it finally hit the first car in front of it. The speed at which the second car applies the brakes is 18 m/s. What is the speed of the second car just as it hits car B if the coefficient of kinetic friction is 0.4?

An ice skater is traveling in a straight, horizontal line on the ice with a velocity of v = 7.5 m/s in the positive x-direction. The coefficient of kinetic friction between the skates and the ice is μk = 0.23.  v=7.5 m/s uk= 0.23   Using the expression for normal force,write an expression for the skaters acceleration in the x-direction, a

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A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car. During the collision × the force that the truck exerts on the car is much greater than the force that the car exerts on the truck the car and the truck have the same magnitude acceleration. the force that the car exerts on the truck is slightly greater than the force that the truck exerts on the car the force that the car exerts on the truck is exactly equal to the force that the truck exerts on the car

please just say which option is right, no need for explain

Climbing ropes stretch when they catch a falling climber, thus increasing the time it takes the climber to come to rest and reducing the force on the climber. In one standardized test of ropes, an 80 kg mass falls 4.8 m before being caught by a 2.5-m-long rope. If the net force on the mass must be kept below 11 kN, what is the minimum time for the mass to come to rest at the end of the fall?

Hello i need to find the coefficient of kinetic friction from this problem. THIS IS NOT A GRADED QUESTION. its a problem from my book im trying to understand. Thank you.

Continuing from problem 8, the force F is increased to 50 N. The data are as follows: a) The object's mass is 4 kg, b) g = 10 m/s². c) Coefficient of the kinetic friction = 0.5 / sqrt(3) and coefficient of the static friction = 1 / sqrt(3). d) Magnitude of the force F = 50 N. 30⁰ F What is the acceleration of the object in m/s²? Round to the nearest decimal.