Answer:
The heavier one will have twice the kinetic energy of the lighter one.
Explanation:
For the objects of mass m and 2 m , kinetic energy is
0.5 m v² and 0.5 (2 m) v² respectively. So kinetic energy of the mass 2 m is Twice that of the object of mass m, since their final velocities are equal.
When an object is dropped from the top of a building ( or from some height), its acceleration is equal to the acceleration due to gravity and has a zero initial velocity. On reaching the ground, the final velocity attained by the object depends only on the gravity and the height of fall, as given by the equation v = √2 g h.
So final velocity is independent of the mass of the object. But kinetic energy is 0.5 m v² , which shows that it depends on the mass of the object and square of the velocity.
I would say the number of harmonics decrease, because you're adding to the frequency of a wave.
I hope this helps :)
Answer:
yes
Explanation:
yes, because lets say you were a surgeon you would have sharp tools floating everywhere
Answer:
-80 N
Explanation:
First of all, let's calculate the deceleration of the ball, which is given by:
where
v = 0 m/s is its final velocity
u = 10 m/s is its initial velocity
t = 0.5 s is the time taken
Substituting,
And now we can calculate the average net force required to stop the ball by using Newton's second law: in fact, the net force is equal to the product between the ball's mass (4 kg) and the acceleration, so:
Where the negative sign simply means that the force is in the opposite direction to the motion of the ball.