The horizontal surface on which the block (mass 2.0 kg) slides is frictionless. the speed of the block before it touches the spring is 6.0 m/s. how fast is the block moving at the instant the spring has been compressed 15 cm? k = 2.0 kn/m

3.67 m/s

Explanation:

mass of block(m)=2 kg

Velocity of block=6 m/s

spring constant(k)=2 KN/m

Spring compression x=15 cm

Conserving Energy

energy lost by block =Gain in potential energy in spring

measuring things 1 litre of water

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.