Answer:
h = 14.4 m
Explanation:
The height can be calculated by energy conservation:
<u>Where</u>:
W: is the work
: is the potential energy
: is the rotational kinetic energy
: is the transitional kinetic energy
Initially, the wheel has rotational kinetic energy and translational kinetic energy, and then when stops it has potential energy.
<u>Where</u>:
I: is the moment of inertia = 0.800 mr²
ω₀: is the angular speed = 25.0 rad/s
m: is the mass = P/g = 397 N/9.81 m*s⁻² = 40.5 kg
v: is the tangential speed = ω₀r²
Now, by solving the above equation for h we have:
Therefore, the height is 14.4 m.
I hope it helps you!
Answer:
the answer will be c
car p has twice the kinetic energy of car Q
Answer:
Newton's 1st law of motion
Explanation:
"An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force." So in a space ship that's moving, if they stop Grogu would keep moving forward unless acted upon by an unbalanced force, aka a seatbelt.
Therefore, it can be reasonably concluded according to your
unfinished syllogism, that there are many people who do not
think scientifically.
Answer:
a = 1 m/s²
Explanation:
given,
mass of the person = 60 Kg
Net External force exerted = 90 N
force of friction opposing the motion = 30 N
acceleration of the box = ?
Net force = External force applied - frictional force
Net force = 90 - 30
net force = 60 N
we know
F = mass x acceleration
60 = 60 x a
a = 1 m/s²
acceleration of the box is equal to a = 1 m/s²
