An object with more mass has more kinetic energy than an object with less

Physics

1 answer:

Ber [7]3 years ago

4 0

Explanation:

The kinetic energy of an object is given in terms of its mass and object as :

$K=\dfrac{1}{2}mv^2$

An object with more mass has more kinetic energy. An object with less mass, if both objects are moving at the same speed, in opposite directions, will have less kinetic energy. The square of v will give positive number.

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The average speed would be 33.29m/s.
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$Average speed = \frac{total distance}{total time}$

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Scenario 1:
Speed = 29m/s
Time = 120s
Distance = ?

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Now that you have the distance of both, you can solve for your average speed.

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3 years ago

A toy car having mass m = 1.10 kg collides inelastically with a toy train of mass M = 3.55 kg. Before the collision, the toy tra

kkurt [141]

Answer:

$V_{ft}= 317 cm/s$

ΔK = 2.45 J

Explanation:

a) Using the law of the conservation of the linear momentum:

$P_i = P_f$

Where:

$P_i=M_cV_{ic} + M_tV_{it}$

$P_f = M_cV_{fc} + M_tV_{ft}$

Now:

$M_cV_{ic} + M_tV_{it} = M_cV_{fc} + M_tV_{ft}$

Where $M_c$ is the mass of the car, $V_{ic}$ is the initial velocity of the car, $M_t$ is the mass of train, $V_{fc}$ is the final velocity of the car and $V_{ft}$ is the final velocity of the train.