Particles are objects in motion, so they have kinetic energy. The faster a particle moves, the more kinetic energy it has. Kinetic energy is related to heat. I hope this helps!
Answer:
10.9 m
Explanation:
We can solve the problem by using the law of conservation of energy.
The initial mechanical energy is just the kinetic energy of the ball:
where m is the mass of the ball and u = 16.9 m/s the initial speed.
At a height of h, the total mechanical energy is sum of kinetic energy and gravitational potential energy:
where v is the new speed, g is the gravitational acceleration, h is the height of the ball.
Due to the conservation of energy,
(1)
Here, at a height of h we want the speed to be 1/2 of the initial speed, so
So (1) becomes
So we can find h:
Answer:
Explanation: The end of the magnet that points towards the south is called the north-seeking end or the south pole of the magnet.
We have,
f=ma
or, f=1600/4.5
hence, f=355.55N