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fenix001 [56]
2 years ago
11

True or False : If a car drives on a road for a nonzero amount of time, then its average velocity must be nonzero.

Physics
1 answer:
kirza4 [7]2 years ago
7 0

Answer:

Your answer would be:
B.) False


If a car drives on a road for a nonzero amount of time, then its average velocity must be nonzero.

If a car drives for a nonzero amount of time, then its average acceleration must be nonzero.




Explanation:

Have a great rest of your day
#TheWizzer

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how many meters would you have traveled after 90 minutes if you're average velocity is 4 kilometers per hour?​
Gekata [30.6K]

Answer:

<h2><em><u>6,000 Meters.</u></em></h2>

Hope this helps you! :)

5 0
3 years ago
In an experiment, students measure the position x of a cart as a function of time t for a cart that starts at rest and moves wit
Minchanka [31]

Given :

Initial velocity , u = 0 m/s² .

To Find :

The acceleration of the cart.

Solution :

Since, acceleration is constant.

Using equation of motion :

x = ut + \dfrac{at^2}{2}\\\\x = \dfrac{at^2}{2}

Putting, t = 1 s  and x = 4 m in above equation, we get :

4 = \dfrac{a(1)^2}{2}\\\\a = 8 \  m/s^2

Therefore, the acceleration of the cart is 8 m/s².

5 0
2 years ago
Which number is 0.0069 expressed in scientific notation? 6.9 × 10 4 6.9 × 10 –6 6.9 × 10 –4 6.9 × 10 –3
Komok [63]

Given: The number = 0.0069 that has to be expressed in scientific notation

Concept: When we express any number in scientific notation then we shall consider two points.

(i) If we shift the decimal point from left to right after first (non-zero) digit then we count the number of shifted place of decimal and write them in terms of the negative power of 10. For example,  0.004789 = 4.789 ×10⁻³

(ii) If we shift the decimal point from right to left after first (non-zero) digit from the left end then we count the number of shifted place and write then in terms of the positive power of 10. For example,  4789.24 = 4.78924 ×10⁺³ = 4.78924 ×10³ Now, we shall convert the given number 0.0069 in scientific notation

0.0069  = 6.9 ×10⁻³ because we have shifted the decimal from left to right for three places that is after digit 6.

Hence, the last option 6.9 ×10⁻³ will be the correct option.

5 0
3 years ago
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MatroZZZ [7]

Answer:

1)A

2)C

3)A

4)C

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5 0
2 years ago
If light moves at a speed of 299,792,458 m/s, how long will it take light to move a distance of 1,000 km
astra-53 [7]

Answer:

change 1000km into Metre

1000km=1000000 M

speed= distance/time

time=distance/speed

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6 0
2 years ago
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