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.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it