3. A body starts from rest and moves with a uniform acceleration of 3 ms-2 in a straight line.
(a) What is its velocity after 4 seconds?
(b) When will it be 100 m from its starting point?

a and c

c is 100% but i am confused in a

nah.   i'm just sleepy.

a displacement distance is size of displ

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods