Answer:
Mass, m = 32 kg
Explanation:
Given that,
Force, F = 2000 N
The change in velocity, (v-u) = 50 m/s
Time, t = 0.8 s
We need to find the mass of the ball. The net force acting on an object is given by :
F = ma
Where a is acceleration
So, the mass of the ball is 32 kg.
Answer:
Diffusion is net movement of anything from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration. The concept of diffusion is widely used in many fields, including physics, chemistry, biology, sociology, economics, and finance.
Explanation:
1.
Answer:
Hand on book
Earth on book
Explanation:
Since we are holding the book so the forces that acts on the book is
1. Hand on book
this is the contact force between hand and the book
2. Earth on book
here this is the gravitational attraction force of earth on the book
2.
Answer:
A. book on hand - NA
B. hand on book - upwards
C. floor on book - NA
D. earth on book - downwards
Explanation:
Since book is holding in hand so at equilibrium position we can say that the forces on the book must be in equilibrium
so first of all the force of attraction due to earth on the book is downwards and this is counterbalanced by the force of hand on book which is upwards.
3.
Answer:
A. book on hand
Explanation:
As per Newton's III law we know that every action has equal and opposite reaction.
so if our hand apply the force on the book in upward direction then book will apply same magnitude force on the hand in downward direction.