Answer:
Explanation:
mass of top book = 2kg
mass of book under = 3kg
mass of table = 20kg
a) The diagram is in the attached file to this solution
b) Since the objects are at rest, the acceleration of each of the object is zero
c) Force of gravity giving that g = 10 is
for the top book = 2*10 = 20N
for the book under = 3*10 = 30N
for the table = 25*10 = 250N
d) for the top book = 2*10 - 2*10= 0N
for the book under = 3*10 - 3*10 = 0N
for the table = 25*10 - 25*10 = 0N
So they can easily communicate with other scientists.
Be sure to rate me up and give me a thanks :D
Answer:Due to change in direction
Explanation:
Given
Initially train has traveled a 100 km in North and after exchanging some railroad cars, it traveled 100 in south.
The velocity of the train changes as it direction of motion changes. Velocity is the vector quantity which require direction and magnitude for its reperesentation.
The answer is Stay In Place