1. the following equation is derived from newton's second law of motion. a body of mass has a force of 20 n/s and an acceleration of 50 m/s2. what's the mass of the object?
a. 0.8 kg
b. 0.5 kg
c. 0.4 kg
d. 1.5 kg

Newton's second law for an object's motion in one spatial dimension:

F = ma

F is the net force acting on the object, m is the object's mass, and a is the object's acceleration.

Given values:

F = 20N

a = 50m/s²

Plug in these values and solve for m:

20 = m(50)

m = 0.4kg

Choice C

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