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Rufina [12.5K]
3 years ago
13

Velocity has two pieces of information.what are they

Physics
1 answer:
seraphim [82]3 years ago
3 0
They are speed and direction.
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a ball of mass 0.80 kg moving at a speed of 2.5 m/s along a straight line collided with a mass 2.5 kg which was initially statio
Likurg_2 [28]

The speed of the 0.8 kg ball immediately after collision is 0.625 m/s in opposite direction to the stationary ball.

The given parameters;

  • mass of the ball, m₁ = 0.8 kg
  • speed of the ball, u₁ = 2.5 m/s
  • mass of the object at rest, m₂ = 2.5 kg
  • final velocity of the object at rest, v₂ = 1 m/s

Let the final velocity of the 0.8 kg ball immediately after collision = v₁

Apply the principle of conservation of linear momentum;

m₁u₁ + m₂u₂ = m₁v₁  +  m₂v₂

(0.8 x 2.5) + (2.5 x 0) = (0.8)v₁  +  2.5(1)

2 = 2.5 + (0.8)v₁

-0.5 = (0.8)v₁

v_1 = \frac{-0.5}{0.8} \\\\v_1 = -0.625 \ m/s

Thus, the speed of the 0.8 kg ball immediately after collision is 0.625 m/s in opposite direction to the stationary ball.

Learn more here: brainly.com/question/7694106

5 0
2 years ago
Joanna claims that a large block of ice will cool a substance more than a small block of ice will at the same temperature. To su
Levart [38]

She puts each block of ice in the same 3000 mL beaker, each with 2000 mL of water at room temperature, and measures the temperature before and after adding ice. Therefore, small blocks of ice will have the same temperature.

Joanna puts two blocks of ice (one larger than the other) into separate cups and fills each with water. She compares the final water temperature of the two cups after each block of ice melts.

Put each block of ice in the same 3000 mL beaker, each at room temperature, put 2000 mL of water in it, and measure the temperature before and after adding ice. This way you keep the water at the same temperature in the beginning, then the temperature changes after you add the ice, giving you a better idea of ​​the final temperature reading.

Learn more about Temperature here brainly.com/question/24746268

#SPJ9

                 

3 0
1 year ago
Which part of the neuron receives messages from other neurons?
kow [346]

Answer:

d

Explanation:

the dendrites is a part of the neuron receives messages from other neurons. Dendrites extend out from the cell body and receive messages from other nerve cells

3 0
2 years ago
A student performs an experiment and must measure the lengths of four different objects: a textbook, a pencil, a cup, and a piec
Strike441 [17]
Most appropriate unit of measurement should be centimetres, cm.
7 0
3 years ago
Read 2 more answers
A student applies a force of 245 N to move a bicycle 12.0 meters. How much work is done on the bicycle
atroni [7]

Answer:

<h2>2940 J</h2>

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

workdone = 245 × 12

We have the final answer as

<h3>2940 J</h3>

Hope this helps you

8 0
3 years ago
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