Answer:
Talk to his team captain and ask him to alert the referee to keep a better eye on the player.
Answer: 40m/s
Explanation:
Given that,
speed of car (v) = ?
Mass of car (m) = 500.0 kilogram
Kinetic energy (KE) = 400,000 joules
Recall that kinetic energy is possessed by a moving object, and it depends on the mass and speed by which the object moves
i.e Kinetic energy = 1/2mv²
400,000J = 1/2 x 500.0kg x v²
400,000J = 250.0kg x v²
v² = 400,000J / 250.0kg
v² = 1600
Find the square root of v²
v = √1600
v = 40m/s
Thus, the speed of the car is 40m/s
when you drop a ball and let it fall to the ground
Explanation:
Assuming that there is no air resistance, the given time means that the ball reached its maximum height 3 seconds after throwing it upwards so we can solve its
maximum height by solving for 
first:
Now that we know 
we can now solve for 
For Art class, Social Studies class, English class, American History class,
or Photography class, Shani has done an incredible amount of work.
She'll tell her parents all about it at dinner, and her arms will really ache
when she gets up tomorrow morning.
But it's a different story in Physics class. In Physics, there is a formal definition
for "work". (That's so it can be measured, and numerically compared to all forms
of energy.)
The scientific definition of work is
(force exerted) times (distance moved) .
With this definition, if the force doesn't move through a distance,
then the work done is zero.
Anything you do without moving, even if it's holding a small car over
your head for an hour while your muscles tremble and sweat pours
down, represents no "work" in the scientific sense.
