Answer:
E
Explanation:
they are all correct but B and C are the most important.
Answer:
Explanation:
1
t = D/2(vw) + D/2(vr)
2
V(ave) = 2.v(r).v(w) / [v(r) + v(w)]
3
t(T) = 2D / [v(w) + v(r)]
4
Tim does
5
Answer:
.
Explanation:
In a projectile motion, the kinetic energy (KE) of the projectile is converted to gravitational potential energy (GPE) and then from GPE back to KE.
In this example, the spring toy is the projectile. Refer to the diagram attached.
- The spring toy started with a velocity of
, meaning that its initial KE is non-zero. - On the way up, the KE of this spring toy gets converted to GPE.
- At the top of the trajectory, the GPE of this toy is maximized while its KE is minimized (zero).
- As the toy returns to the ground, the GPE of this toy gets converted back to KE.
- The GPE of this toy is zero when the toy is on the ground.
In other words, the kinetic energy (KE) of this toy would be 
when it is at the top of the trajectory and GPE is maximized.
Since the KE of this toy at the top of the trajectory would be , the velocity of this toy at that moment would also be 
.
Answer:
Explanation:
Since the bell is at rest in an elevated position, we can assume that it only has potential energy.
U=mgh is the formula for potential energy where U=potential energy, m= mass, g=acceleration due to gravity, and h=height.
Plug in known variables....
U=200kg*9.8m/s^2*45m
U=88200 joules of potential energy or letter D.
<span>Is the following sentence true or false? Newton's first law does object's mass concentration and its axis of rotation increases, its rotational inertia The bicycle wheels at rest have no angular momentum, and the bicycle will fall over easily.</span><span>
</span>
