Answer:
67.6 m
Explanation:
For this problem, we just need to analyze the motion of the two planes after the collision.
The two planes stick together and move with a velocity of
u = 19.3 m/s
The problem tells us that they skid until they stop: so, their final velocity is
v = 0
Since the velocity is not constant, this means that they are accelerating.
We also know that they skid for a time of
t = 7 s
Therefore, we can find their stopping distance using the following suvat equation
And substituting, we find
Answer:
Definition of speed of light. : a fundamental physical constant that is the speed at which electromagnetic radiation propagates in a vacuum and that has a value fixed by international convention of 299,792,458 meters per second
Explanation:
I think it's 39.53
(please do calculate it. I am not completely sure)
I think that the answer is B that the sun (DOES NOT) support the processes of plate tectonics
Answer:
, upward
Explanation:
The passenger on the wheel experiences a centripetal acceleration, which is the one that keeps him in a circular motion.
The direction of this acceleration is always towards the centre of the circular trajectory: so when the passenger is at the lowest point of the ride, the acceleration is upward.
Concerning the magnitude, it is given by
where
is the angular velocity
r = 15 m is the radius
We need to find the angular velocity; we know that the wheel completes 3 revolutions in one minute. Each revolution corresponds to an angle of 
rad, so the total angular displacement is
rad
And the time is
So the angular velocity is
And substituting into the equation of the acceleration,
