6) The kinetic friction force that a horizontal surface exerts on a 60.0-kg object is 50.0 N. If the initial speed of the object is 25.0 m/s, what distance will it slide before coming to a stop? A) 15.0 m B) 375 m C) 750 m D) 30.0 m

A 5-kg box is on a rough horizontal surface. An external force F is applied horizontally to the box. When force F equals 4 N, the box is in motion at constant velocity. When force F equals 5 N, the acceleration of the box is closest to a) 0.2 m/s2 b)1 m/s2 c) 0 m/s2 d) 0.5m/s2

We start with some review problems A crate of mass 22.9 kg rests on a level surface, with a coefficient of kinetic friction 0.169. You push on the crate with an applied force of 235 N. What is the magnitude of the crates acceleration as it slides?A) 4.30 m/s^2B) 12.31 m/s^2C) 8.60 m/s^2D) 10.26 m/s^2

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?

2) Veronica is working in a shoe test lab measuring the coefficient of friction for tennis shoes on a variety of surfaces. The shoes are pushed against the surface with a force of 400 N, and a sample of the surface material is then pulled out from under the shoe by a machine. The machine pulls with a force of 300 N before the material begins to slide. When the material is sliding, the machine has to pull with a force of only 200 N to keep the material moving. a. What is the coefficient of static friction between the shoe and the material? b. What is the coefficient of dynamic friction between the shoe and the material?

2) A 200-g box is placed on a 20° incline and accelerates at 0.1 m/s². What is the coefficient of friction between the box and the incline? (0.35)

Steps Step 1) Look up the value for the coefficient of kinetic friction between the steel ball and steel track. Step 2) The ball is raised up to a height near the top of the right side of the track. Record this as h2. Step 3) The ball is released with no initial velocity and allowed to roll down the track. Step 4) Determine the velocity of the ball when it reaches the bottom of the track. Step 5) Compare the calculated velocity of the ball at the bottom of the track with the value measured by the motion sensor. Step 6) The height the ball reaches on the opposite side of the track is recorded as h3. Step 7) Complete Tables 1 and 2. Table 1 mBall (kg) 0.05 0 (degrees) h2 (m) h3 (m) 30 0.85 0.75 Table 2 PE, (J) PE2 (J) PE3 (J) Vr1 (m/s) Vn2(m/s) | Vn3 (m/s) N (N) d (m) Wnc (J) Vh1 (meter) = 3.5 m/s Loss of Energy = .

⦁ Explain why you would rather fall 10 ft onto a featherbed than on concrete using physics

25 - A diver with a mass of 70 kg jumps from the 10.0 meter high tower for a direct-vertical dive. Its movement ends at 2.50 meters below the water level. Find the average drag force exerted by the water on the diver.   A) 1.50 kN B) 4.12 kN C) 3.09 kN D) 5.34 kN E) 1.05 kN