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3 years ago

7

A parachute on a racing dragster opens and changes the speed of the car from 85 m/sec to 45 m/sec in a period of 4.5 seconds. Wh

at is the acceleration of the dragster?

1 answer:

Serggg [28]3 years ago

6 0

Acceleration is change is velocity over time. So the change in velocity is 40 and time is 4.5 sec. So the acceleration is 40/4.5=8.89 m/s^2

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High friction materials

Harrizon [31]

Answer:

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Explanation:

High friction materials has higher coefficient of friction (COF).

7 0

3 years ago

Help me <3 please <br> Thank you :)

NARA [144]

Answer:

11,890

Explanation:

First we need to know what is considered a significant figure.

A significant figure is a value that is not a zero at the start OR end of a value.

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So from the table, we can deduce:

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2 years ago

A ferry is travelling at 10 m/s relative to the river towards the south. The river is flowing at 2 m/s relative to

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Answer:

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v = 1.0 m/s + (-10 m/s) + (-2 m/s)

v = -11 m/s

v = 11 m/s south

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4 years ago

Why does the frequency of a siren get higher as an ambulance using that siren gets closer

Nadya [2.5K]

The frequency of a wave becomes higher due to the object moving at a fast pace coming towards you with shorter wavelengths (depending on the speed) aka the Doppler Effect.
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3 years ago

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Mariana [72]

Answer:

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2 years ago