John finds a rock that contains large, light-colored mineral crystals. the rock shows no sign of being altered by heat or pressure. what can john infer about the rock?
a. the rock is formed below earths surface.
b. the rock formed from hardened magma.
c. the rock underwent lithification.
d. the rock underwent metamorphism.

Coarse grained Igneous rock are slowly cool down. The rock that John found is formed from hardened magma.

Coarse grained Igneous rock:

It is a type of igneous rock that have slowly cool down, hence minerals got more time to enlarge.

Here, John found the rock that contain large crystals without any sign of alteration due to heat or pressure.

Therefore, the rock that John found is formed from hardened magma.

To know more about metamorphism.

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From the above statement, John can infer that the rock underwent metamorphism and also is not altered by heat or pressure.

Explanation:

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied