Mr. spoke is travelling with speed v = 9.4c.
Mr. spoke is apparently unknowing of theory of special relativity by Einstein. The theory states that moving clock tick slower than stationery clock.
Time elapse =∆t = 3 weeks
(In earth stationery frame)
Time ellipse= ∆t' = 1 week
(In the frame of rocket)
∆t' = ∆t'/γ
1/y² = 1 - v²/c²
∆t'²/∆t² =
=1²/3²
=1/9
c= 3×10⁸m/s
on solving above equation we get :
v = 9.4c
He was spreading around at close to the speed of light.
Experience significant time dilatation.
He is travelling with speed v = 9.4c.
To know more about special theory of relativity :
brainly.com/question/28289663
# SPJ4
Answer:
Resultant horizontal force = 143 N
Explanation:
Since the a gle is 30° northwest, then it means the resultant force will be horizontal and as such;
Resultant horizontal force = 165 * cos 30
Resultant horizontal force = 142.89
Approximating to a whole number gives;
Resultant horizontal force = 143 N
I think to an observer outside the train, the speed of the ball will actually look like more than the speed of the train.
