6.00 ✕ 105 kg subway train is brought to a stop from a speed of 0.500 m/s in 0.600 m by a large spring bumper at the end of its track. What is the force constant k of the spring?

A vertical massless spring with spring constant of 740 N/m, is attached to a table and is compressed down by 0.200 m. (a) what upward speed can it give to a 500 g ball when released? (b) How high above its original position (spring uncompressed) will the ball fly?

Can you help me with this problem?A block with a mass m is initially compressing a spring by x1 on a horizontal floor with friction. The spring has a spring constant k. The block is realeased from rest and travels a total distance of D including x1 and has a speed of v. what is the coefficent of kinetic friction between the floor and block?

A cannon with a spring constant of 147 N/m is compressed by 20 cm to shoot marbles of mass 30 g. What is the farthest distance that it can shoot without hitting the top of the ceiling that is 3.0m above the ground?

A glider that is 180 kg is pushed by a spring with constant 3.2*10^5 N/m down a water slide track from a height of 35m in a zig zag path. Once the slide reaches the floor level track, it will be eventually stop due to friction. Friction only exists on the ground level, and the coefficient of kinetic friction here is 0.8. If 70 meters is the max distance that the glider move on this ground level track, what is the safest maximum distance that the spring can be compressed if a 20 kg person is also on the glider.

A 60.0 kg skier with an initial speed of 15 m/s coasts up a 2.50 m high rise as shown in the figure. what is her final speed given the coefficient of friction between her skies and the snow is 0.39

A block of mass 15.0 kg slides from rest down a frictionless 33.0° incline and is stopped by a strong spring with k = 4.00 ✕ 104 N/m. The block slides 3.00 m from the point of release to the point where it comes to rest against the spring. When the block comes to rest, how far has the spring been compressed?

A 60.7 kg person jumps from rest off a 2.96 m-high tower straight down into the water. Neglect air resistance during the descent. She comes to rest 1.08 m under the surface of the water. Determine the magnitude of the average force that the water exerts on the diver. This force is nonconservative.

At t=0, force F = (-4.407 +4.00 +3.50k) N begins to act on a 3.30 kg particle with an initial speed of 4.40 m/s. What is the particle's speed when its displacement from the initial point is d = (2.801 + 1.40) +6.00k) m?

An M = 22.4 kg sled slides on a rough horizontal ground.  The sled hits a spring when it is traveling with a horizontal velocity of vi = 12.3 m/s.  The sled compresses the spring at a distance of x = 2.12 m before coming to rest.  If the force constant of the spring is k = 550 N/m, find the effective coefficient of kinetic friction, μk, between the sled and the ground