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4 years ago

5

What are the differences between speed, velocity, and acceleration?

2 answers:

Levart [38]4 years ago

8 0

Answer:

speed is scaler quantity and velocity or acceleration is a vector quantity

irakobra [83]4 years ago

5 0

Answer:

Speed is a measure of how far something moves in a given amount of time.

Velocity is speed in a specific direction

Acceleration is the rate of change of velocity per unit of time.

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Read 2 more answers

A cart of mass 6.0 kg moves with a speed of 3.0 m/s towards a second stationary cart with a mass of 3.0 kg. The carts move on a

katen-ka-za [31]

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Given

mass of first cart $m_1=6 kg$

mass of second cart $m_2=3 kg$

velocity of first cart $v_1=3 m/s$

conserving momentum

$m_1v_1+m_2v_2=(m_1+m_2)v$

$6\times 3+3\times 0=(9)\cdot v$

$v=2 m/s$

Initial kinetic Energy $K.E._1=\frac{1}{2}m_1v_1^2+\frac{1}{2}m_2v_2^2$

$K.E._1=\frac{1}{2}\cdot 6\cdot 3^2+0$

$K.E._1=27 J$

Final Kinetic Energy

$K.E._2=\frac{1}{2}(m_1+m_2)v^2$

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Ratio of initial Kinetic Energy to the Final Kinetic Energy

$=\frac{27}{18}=1.5$

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4 years ago