A1.40 kg block is attached to a spring with spring constant 15.5 n/m . while the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 43.0 cm/s . what are the block's speed at the point where x= 0.650 a

v = 3.08 m/s.

Explanation:

Given,

At x = 0.650 m

Let 'a' be the acceleration of the block at x.

Total force due to the spring force on the blcok at x= kx

Hence the acceleration of the block at x is 7.19\ m/s^2.

Let 'v' be the velocity of the block at x.

From the kinematics,

Hence at the compression x = 0.650 m the velocity of the block is 3.08 m/s.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

the answer is a 3.8cm

explanation: