So your finding acceleration first which is 30m/s divides by 6 seconds equals 5m/s^s and then multiply that by 1,400 kg and you have net force which is 7,000N
Answer:
2. 17.7cm
3. -7 that is magnification
Explanation:
See attached handwritten document
Answer: Is permanently deformed.
Explanation (see the diagram shown below).
For most structural materials:
(a) The deformation in the elastic zone is recoverable, and the material returns
to its original shape when the load (or stress) is removed.
(b) A permanent set (non-recoverable deformation) occurs when the material
is sressed beyond the elastic zone, that is, in the plastic zone.
Answer:
the recessional velocity of the galaxy is 2.736×10^-3 km/s
Explanation:
for the recessinal velocity of the galaxy as v and d being the distance of the galaxy from us and H as the hubble constant, then hubbles law says:
v = H×d
= (22 km/s per million light years)×108 light years
= (2.2×10^-5 km/s per light years)×108 light years
= 2.376×10^-3 km/s
Therefore, the recessional velocity of the galaxy is 2.736×10^-3 km/s