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3 years ago

11

A car covers 400m distance in 50 sec find it's speed?

1 answer:

Lena [83]3 years ago

4 0

Answer:

$\boxed {\boxed {\sf 8 \ m/s}}$

Explanation:

Speed is equal to distance over time.

$s=\frac{d}{t}$

The distance is 400 meters and the time is 50 seconds.

$d= 400 \ m \\t= 50 \ s$

Substitute the values into the formula.

$s=\frac { 400 \ m }{ 50 \ s}$

Divide.

$s= 8 \ m/s$

The speed of the car is 8 meters per second.

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3 years ago

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san4es73 [151]

Answer:

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3 years ago

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Two 10 kg pucks head straight towards each other with velocities of 10 m/s and -20 m/s. They collide and stick together. Calcula

RUDIKE [14]

The final velocity of the two pucks is -5 m/s

Explanation:

We can solve the problem by using the law of conservation of momentum.

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where

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$u_2 = -20 m/s$ is the initial velocity of the 2nd puck

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Re-arranging the equation and solving for v, we find:

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Learn more about momentum:

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