Answer:
vc = v cannon
mc = m cannon
vb = v ball
mb = m ball
vc = d / t
= (6.1 cm) / (0.0218 s)
= 280 cm/s
mb x vb = -mc x vc
(negative as it is in the opposite direction)
(0.0562) x vb = - (1.27) x (-280)
vb = - (1.27) x (-280) / (0.0562)
= 6323.26 cm/s
ball = 63.2 m/s
cannon = 2.8 cm/s - recommend changing to m before calculations
This is called a computer case, also called as cabinet, chassis or tower. This houses the computer most components such as motherboard with cpu, drivers and memory cards. Computer case comes in different type of material. Usually it is made of steel, and aluminum but sometimes in fiber glass or even wood.
Answer:
Explanation:
An anion is a negatively charged atom ie. Atoms that have gained an electron.
Flouirne is a group 7 element and it is highly electronegative. It easily draws electron to itself. With an electron, the outermost shell of Flouirne would mimic that of a noble gas.
Therefore, a combination of Sr and F would make F an electron acceptor and then an anion.
Answer:
F = 20 N
Explanation:
Given that,
Mass of the football, m = 2 kg
Initial speed, u = 0
Final speed,v = 5 m/s
The time of contact, t = 0.5 s
We need to found the average force applied by the footballer on the football. We can find it using the formula.
So, the required force is 20 N.
Let's cut through the weeds and the trash
and get down to the real situation:
A stone is tossed straight up at 5.89 m/s .
Ignore air resistance.
Gravity slows down the speed of any rising object by 9.8 m/s every second.
So the stone (aka Billy-Bob-Joe) continues to rise for
(5.89 m/s / 9.8 m/s²) = 0.6 seconds.
At that timer, he has run out of upward gas. He is at the top
of his rise, he stops rising, and begins to fall.
His average speed on the way up is (1/2) (5.89 + 0) = 2.945 m/s .
Moving for 0.6 seconds at an average speed of 2.945 m/s,
he topped out at
(2.945 m/s) (0.6 s) = 1.767 meters above the trampoline.
With no other forces other than gravity acting on him, it takes him
the same time to come down from the peak as it took to rise to it.
(0.6 sec up) + (0.6 sec down) = 1.2 seconds until he hits rubber again.
