Let's take the positive x-direction towards east and the positive y-direction towards south. The momentum must be conserved on both directions, after the collision. On the x-direction, initially we have only momentum from car 1, while on the y-direction initially only car 2 contributes to the total momentum of the system. After the collision, the two cars will move together with a total mass (m1+m2) and with final velocity vf, which can be decomposed on both directions. All of this translates into the equations:
(1)
(2)
where
,
,
and
.
and
are the components of the final velocity on both axes x and y.
By dividing equation (2) by (1), we get:
And the tangent of this ratio gives exactly the angle of the velocity vf in the south-east direction, with respect to the positive x-axis, so it gives us the direction of the final velocity:
Answer:
13807.2 J/g°C
Explanation:
I just took the test and got it correct
The peak speed of Steve races in kilometer per hour is 2.423 km/h.
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<h3>What is peak speed?</h3>
Peak speed is the maximum change in the distance traveled by an object over a period of time.
The given peak speed;
V = 67.3 cm/s
The peak speed is converted to kilometer per hour as follows;
Thus, the peak speed of Steve races in kilometer per hour is 2.423 km/h.
Learn more about speed conversion here: brainly.com/question/2681210
Weight = (mass) x (local gravity)
8.2 N = (5 kg) x ( g )
Divide each side
by 5 kg : 8.2 N / 5 kg = g
g = (8.5 kg-m/s²) / (5 kg)
= (8.5 / 5) m/s²
= 1.7 m/s² .
Resistance typically opposes flow of current.
When the Resistance is increased, the current would be reduced, but when the Resistance is reduced, the current would be increased in the circuit.