Answer:
the second law states that the force F is the product of an object's mass and its acceleration a: F = m * a. For an external applied force, the change in velocity depends on the mass of the object.
Answer:
A) The crossbeam is moving relative to the observer on the platform so the height appears contracted.
Explanation:
The observer on the train and the beam are in the same reference frame. That means observer on the train will measure the proper length of the beam not the contracted length . the observer is outside and the plank is in the moving system,it will appear to be moving.
Answer:
A. 26.17 B. 1.17 C. 30.86 D. 5.86
Explanation:
Answer:
There are so many questions which one you don't know
Answer:
is from 9 x 107 m/sec to 27 x 107 m/s
