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Ostrovityanka [42]
3 years ago
12

Please help! im being timed!! urgent!

Physics
1 answer:
bogdanovich [222]3 years ago
5 0

Answer:

The answer is thermal energy

Explanation:

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In a game of pool, the cue ball moves at a speed of 2 m/s toward the eight ball. When the cue ball hits the eight ball, the cue
Tomtit [17]

a)  p₀ = 1.2 kg m / s

b) p_f = 1.2 kg m / s  

c)    v_{2f} = 1.278 m/s

d)1.2482 =v_{2f} cos θ

e)  0.2736 =v_{2f}sin θ

g) θ = 12.36

<h3>What is momentum?</h3>

Momentum is the product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction.

According to the question,

We define a system formed by the two balls, which are isolated and the forces during the collision are internal.

Hence , the momentum is conserved

a) The momentum of the system before the collision:

p_o = m v_1_0 + 0         p_o= 0.6 2         p_o = 1.2 kg m / s

b) The momentum of the system after the collision, as the system is isolated, the momentum is conserved so

p_f = 1.2 kg m / s

d. On X axis

p_ox = 1.2 kg m / s

p_{fx}= m v1f cos 20 + m v2f cos θ

p_o = p_f

1.2 = 0.6 (-0.8) cos 20+ 0.6v_{2f} cos θ

1.2482 =v_{2f} cos θ

e. On Y axis  

p_{oy} = 0

p_{fy}= mv_{1f}sin 20 + mv_{2f}cos θ

0 = 0.6 (-0.8) sin 20 + 0.6 v_{2f} sin θ

0.2736 =v_{2f}sin θ

Here,

g. we write our system of equations

0.2736 =v_{2f} sin θ

1.2482 = v_{2f} cos θ

0.219 = tan θ (divide)

θ = tan⁻¹ 0.21919

θ = 12.36

c. Now To find the velocity

0.2736 = v_{2f} sin θ

v_{2f}= 0.2736 / sin 12.36

v_{2f} = 1.278 m / s

Learn more about momentum here:

brainly.com/question/4956182

#SPJ1

6 0
2 years ago
Heat is:_________
zysi [14]

Answer:

The answer is C ..

EXPLANATION:-

The amount of energy transferred between objects as a result of a difference in temperature.

4 0
2 years ago
A runner runs 10 miles in 1 hour. how far could they run in 2 hours in m/s?
stiv31 [10]

Answer:

4.47 m/s.

Explanation:

distance traveled, d = 10 miles

time, t = 1 hour

Speed of the runner, v = d / t

Speed of the runner = 10 miles / 1

Speed of the runner = 10 mph

1 mph ----------------------- 0.44704 m/s

10 mph -----------------------?

= 4.47 m/s

Thus, in 2 hours the distance traveled will change but the speed it still 10 mph or 4.47 m/s.

3 0
3 years ago
a. As you coast down a hill on your bicycle, you accelerate at 0.5 m/s2. If the total mass of your body and the bicycle is 80 ki
zalisa [80]
According to Newton’s second law of motion:
F=ma
=80*0.5
=40N
7 0
2 years ago
A 2.00 kg cat is in a 97.00 kg elevator. What force on the elevator cable would be needed to lower the cat/elevator pair with an
umka21 [38]

The magnitude of force on the elevator cable that would be needed to lower the cat/elevator pair is 198 Newton.

<u>Given the following data:</u>

  • Mass of cat = 2 kg
  • Mass of elevator = 97 kg
  • Acceleration = 2 m/s^2

To determine the magnitude of force on the elevator cable that would be needed to lower the cat/elevator pair, we would apply Newton's Second Law of Motion:

First of all, we would calculate the total mass of the cat/elevator pair.

Total \;mass=2 + 97

Total mass = 99 kilograms

Mathematically, Newton's Second Law of Motion is given by this formula;

Force = mass \times acceleration

Substituting the given parameters into the formula, we have;

Force = 99 \times 2

Net force = 198 Newton

Read more here: brainly.com/question/24029674

3 0
2 years ago
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