A block attached to an ideal spring moves along a horizontal frictionless surface

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

0.80\,\text{kg}

block attached to an ideal spring moves along a horizontal frictionless surface. The block passes through

x_1 = 0.10\,\text{m}

with speed

1.2\,\text{m}\!\cdot\!\text{s}^{-1}

and later passes through

x_2 = 0.20\,\text{m}

with speed

0.80\,\text{m}\!\cdot\!\text{s}^{-1}

. What is the amplitude of the oscillation? (a)

0.21\,\text{m}

(b)

0.30\,\text{m}

(c)

0.25\,\text{m}

(d)

0.19\,\text{m}