A ball that is thrown upwards from the ground will eventually reach its highest point and fall back to the ground. Which of the
1 answer:
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Answer:
Ok so there are many ways to go at this.
you can get a zip lock bag and put a bunch of plastic around the egg inside the bag. (image down below)
Just anything to slow down the descent speed.
Cushion the egg so that something other than the egg itself absorbs the impact of landing.
Explanation:
Answer:
(a) 2.45×10⁵ N/m
(b) 0.204 m
Explanation:
Here we have that to have a velocity of 2.25 m/s then the relationship between the elastic potential energy of the spring and the kinetic energy of the rocket must be
Elastic potential energy of the spring = Kinetic energy of the rocket
Where:
k = Force constant of the spring
x = Extension of the spring
m = Mass of the rocket
v = Velocity of the rocket
Therefore,
or
(b) Since the maximum acceleration is given as 5.00×g we have
Maximum acceleration = 5.00 × 9.81 = 49.05 m/s²
Hence the force on the rocket is then;
Force = m×a = 1020 × 49.05 = 50,031 N
Therefore,
(a) From which
or
Force constant of the spring, k = 2.45×10⁵ N/m.
The particle has acceleration vector
We're told that it starts off at the origin, so that its position vector at is
and that it has an initial velocity of 12 m/s in the positive direction, or equivalently its initial velocity vector is
To find the velocity vector for the particle at time , we integrate the acceleration vector:
Then we integrate this to find the position vector at time :
Solve for the time when the coordinate is 18 m:
At this point, the coordinate is
so the answer is C.