Answer:
Explanation:
Given
Initially A moves towards Y axis with a velocity of 2 m/s and B moves towards X axis with velocity of 3.7 m/s
mass of both the block is same let say m
Conserving momentum in x direction
thus A moves with a velocity of 3.7 m/s towards x axis in order to conserve the momentum in x direction
Thus ball B moves towards Y direction with
And ball A moves towards X direction with
(c)Total momentum
Kinetic Energy
Explanation:
To me, it's option 1
Newton third law states that Every action produces an equal and opposite reaction. Hence, given the fact that the engine is on, it should be producing a constant force every time so, the speed should be constant as the force propelling it is the same
Answer:
it means a cell has 4.5Volt of electromtive force.
Answer:
Work done, W = 6 J
Explanation:
It is given that,
Force of gravity acting on the book, weight of the book is 15 N
We need to find the work done in lifting the book straight up for a distance of 0.4 meters.
The weight of the book is acting in downward direction and the book is lifted straight up, it means angle between them is 180 degrees. Work done is given by :
So, the magnitude of work done in lifting the book is 6 joules.