A 2.5 kg block of wood moving at 3.2 m/s suddenly crosses from a frictionless surface to a surface with a kinetic coefficient of friction of 0.15. The block will come to rest after....X m

B8

how much force do the expanding gases in a gun barrel exert on a 6.0g bullet as it accelerates from rest to 500.0m/s in the 0.70 m long barrel

1. The 10-lb block has a speed of 4 ft/s when the force of F = (8t?) Ib is applied. Determine the velocity of the block when it moves s = 20 ft. The coefficient of kinetic friction at the surface is Uz = 0.15. Note: It's okay to use an online equation solver to calculate a number in this problem! v = 4 ft/s F = (8f) lb

A 1.50-mm-long, 500 gg rope pulls a 10.0 kgkg block of ice across a horizontal, frictionless surface. The block accelerates at 1.50 m/s2m/s2. How much force pulls forward on the ice? Assume that the rope is perfectly horizontal

Daredevil Darla has heard that to avoid injury when jumping out of her rocket she should bend her knees upon landing. Darla has a mass of 74 kg. If just before contact with the ground, she has a downward speed of 7.3 m/s, then. . .   (a) In a stiff -legged landing she comes to a halt in 2.0 ms. Find the average net force that acts on her during this time. (   b) When she bends her knees, Darla comes to a halt in 0.10 s. Find the average net force now.   (c) During the landing, there are two forces acting on Darla: the normal force from the ground points upward, while her weight force points downward. The average net force acting on Darla includes both of these forces. Taking into account the directions of the forces, find the force of the ground on Darla in parts (a) and (b).

Police examine the scene of an accident involving two cars, which is parked. The skid marks of the moving car, which nearly came to a stop before the collision, is 80 meters long. The coefficient of kinetic friction between rubber and the pavement is about 0.80. Estimate the initial speed of the car.

At Ted's request, Bill pushes the pizza box across the granite countertop towards Ted. When the box leaves Bill's hand it is sliding at 2.60 m/s. The box comes to rest over a distance of 110 cm. What is the coefficient of kinetic friction, uk, between the pizza box and the countertop? (Ignore air drag.)

Hi please help with the following: After hitting a long fly ball that goes over the right fielder's head and lands in the outfield, the batter decides to keep going past second base and try for third base. The 59 kg player begins sliding 3.40 m from the base with a speed of 4.35 m/s. If the player comes to rest at third base, what was the coefficient of kinetic friction between the player and the ground?