A toy gun shoots a dart out from an initial height of 1 m. The gun’s spring has a constant ? = 20 ?/? and was compressed by 5 cm. What is the dart’s velocity just before it hits the ground? The dart’s mass is 10 g.

A 4.50 ✕ 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 (in N/m)? (Enter a number.) ___N/m

You are asked to design spring bumpers for the walls of a parking garage. A freely rolling 1300 kgkg car moving at 0.66 m/sm/s is to compress the spring no more than 7.6×10−2 mm before stopping. 1. What should be the force constant of the spring? Assume that the spring has negligible mass. Express your answer using two significant figures.

A 1.68-kg box rests atop a massless vertical spring with  k = 4170 N/m  that has been compressed by 14.2 cm from its equilibrium position. The box is released and leaves the spring when it reaches its equilibrium position. What is the maximum height the box reaches above its original position?

A block is dropped onto a spring with k = 34 N////m. The block has a speed of 3.0 m/s just before it strikes the spring. If the spring compresses an amount 0.14 m before bringing the block to rest, what is the mass of the block? Answer in kg.

A large toy car is pushed horizontally by a spring, and the spring has a spring constant of 135 N/m. What is the mass of the toy car if compressing the spring 0.055 m (before the toy starts moving) causes it to reach a speed of 0.75 m/s? (Note - the height of the toy does not change.) What equation will be best for calculating this value? Your answer: O mgh, = O mgh, =mv? %3D 0 글씨로=mghy

What is the spring constant of a spring that stores 46 J of elastic potential energy when compressed by 12 cm from its relaxed length? Number 7.7x 10^2 Units N/m

Suppose a block of mass 0.9kg is is held against a spring with spring constant 1.0 × 103N/m, compressing it to a distance of 0.15m. What’s the fastest speed the block can have after it is released and the spring pushes it away?

A 2000 kg car moving at 18 m/s hits an initially uncompressed spring with a spring constant of 8 x 106 N/m. The max compression of the spring in meters is?

A large toy car is pushed horizontally by a spring, and the spring has a spring constant of 135 N/m. What is the mass of the toy car if compressing the spring 0.055 m (before the toy starts moving) causes it to reach a speed of 0.75 mis? (Note - the height of the toy does not change.) Solve the problem. (If you get the answer wrong, you can get 0.5 points for correct units.)