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A body travels 100m in first 2 seconds and 104 in the next 4 second.how far will it gimove in the next four second if the acceleration is uniform?
A body travels 100m in first 2 seconds and 104 in the next 4 second.how far will it move in the next four seconds if the acceleration is uniform?
“Q. Velocity of a moving particle is given by v = t2 – 4. Find out:-
(i) Time at which velocity is zero.
(ii) Acceleration at which t= 1s
(iii) What type of motion uniform or non-uniform.”
In the equation, put v=0 to find the time at which velocity equals zero
Differentiate the equation and then put t=1 to find acceleration at t=1s since a = dv/dt
The motion is non uniform as its velocity varies with time.
- A body falling freely from rest has velocity v after it falls a height h . Calculate the distance it should fall down further for its velocity to become double
- A particle in uniform acceleration in a straight line has a speed of v m/s at position x meter is given by √(25-16x). What is the acceleration of the particle
At t=0 a very small object with mass 0.400mg and charge +9.00μC is travelling at 125 m/s in the -x-direction. The charge is moving in a uniform electric field that is in the +y-direction and that has magnitude E= 895 N/C. The gravitational force on the particle can be neglected. How far is the particle from the origin at t= 7.99 ms.
Hint for solving the above problem:
displacement along X direction; x=-uxt=125 x 7.99/1000
Displacement along Y direction, y=0.5 ay t2
Just substitute the values and get the answer
How much Ag can be deposited as uniform layer on a metallic vessel using 0.2 Ampere current passed through silver salt solution for 3 hours.(1 mol of Ag=108g)
SAN THOMAS ASKED
Sir ir it true or false – “the speed of particle remains constant.this means that no unbalanced force acts on it.” (Purshkar asks)
Answer: If velocity remains constant, then we can say that no unbalanced force acts on it.
Newton’s Laws of motion
First Law: Every body continues to be in its state of rest or state of uniform motion in a straight line unless an external force complels it to do so.
Second Law: The rate of change of momentum of a body is directly proportional to the net external force acting on it and the change in momentum takes place in the direction of motion
Third Law: To every action there is an equal and opposite reaction
The following links will help you learn the topic further and will provide an online resource for understanding the concepts related to it.