Answer:
The person inside the train would see the ball moving straight vertical upward and then vertically downwards also because for a person inside the train, there is only one velocity that could act on the ball and this velocity is downwards.
On the other hand, the person outside the train would see the ball appear to move along the parabolic path because the ball to this person would have two velocities acting on it: the vertical and horizontal components of velocity.
Explanation:
Answer:
The answer is A All the components are made of cells.
Explanation:
If there is no friction, the roller coaster would keep moving forever but a constant velocity. The only way it would accelerate is if there was a force continually pushing on it.
thrust force getting from the burning of mass should balance the weight of the rocket
here thrust force is given as
now by force balance we can say
now plug in all values in this
so rate of mass burning per second will be 5600 kg per second in order to lift up the rocket
