Answer:
v = 49.05 m/s^2
Explanation:
Let's use the uniform acceleration equation to find our final velocity.
v = final velocity
u = initial velocity
a = gravitational acceleration
t = time taken
Assuming the rock is at rest initially, u becomes zero.
Answer:
true
Explanation
1390. FMA. 24485. Anatomical terms of bone. The patella, also known as the kneecap, is a flat, rounded triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint.
Answer;
C.It is the minimum amount of material needed to sustain a fission reaction.
Explanation;
-A critical mass is the smallest or the minimum amount of fissile material needed for a sustained nuclear chain reaction. A critical mass must be achieved in order for the chain reaction to continue and release the atomic energy. A critical mass is needed for both a nuclear reactor and an atomic or hydrogen bomb.
-The critical mass of a fissionable material depends upon its nuclear properties (specifically, the nuclear fission cross section), its density, its shape, its enrichment, its purity, its temperature, and its surroundings.