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Vladimir79 [104]
3 years ago
10

Someone is not paying attention while speeding down the tramway. Their truck has a mass of 2000 kg. Going a whopping 34.1 m/s (7

6.3 mph) the truck crashes into a stationary Corolla (mass of 1100 kg). If the truck comes to a complete stop, how fast does the Corolla slide forward when it is hit
Physics
1 answer:
Valentin [98]3 years ago
8 0

Answer:

Explanation:

This question comes from Conservation of Momentum

M1=2000kg

U1=34.1ms^-1

Now this truck crashes into a stationary corolla

Since its stationary

U2=0

M2=1100kg

The Moving Truck came to a complete stop(or rest)

Its Final Velocity V1=0

Mass still remains the same

The corolla will move with a speed V2

Applying the formula for conversation of Momentum

M1U1 + M2U2 = M1V1 + M2V2

2000(34.1) + 1100(0) = 2000(0) + 1100(V2)

2000(34.1) = 1100(V2)

V2 = 2000(34.1)/1100

V2 =62ms^-1

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Answer:

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substituting these in equation, we get:

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Also,

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3 years ago
What does this picture mean?
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<span>
be aware of large trucks on the roadway
Tip: usually, these signs are hazard signs or warning.
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3 years ago
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Varvara68 [4.7K]

The time lapse between when the bat emits the sound and when it hears the echo is 0.05 s.

From the question given above, the following data were obtained:

Velocity of sound (v) = 343 m/s

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We can obtain obtained the time as illustrated below:

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Cross multiply

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Thus, the time between  when the bat emits the sound and when it hears the echo is 0.05 s.

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A bat emits a sound wave and carefully listens to the echoes that return to it. The returning information is processed by the bat's brain in the same way that we processed our shouting sound with a stopwatch and calculator. The bat's brain determines the distance of an object by measuring how long it takes for a noise to return.

Learn more about time elapses between when the bat emits the sound :

<u>brainly.com/question/16931690</u>

#SPJ4

Correction question:

A bat emits a sonar sound wave (343 m/s) that bounces off a mosquito 8.42 m away. How much time elapses between when the bat emits the sound and when it hears the echo? (Unit = s)

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