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Stels [109]
3 years ago
9

Since velocity describes both speed and direction you can call it

Physics
1 answer:
Fittoniya [83]3 years ago
4 0

Since velocity describes both speed and direction, you can call it a "vector" quantity, and legitimately label it "velocity".

Since speed has no direction, it's a scalar quantity, and it's wrong to call it "velocity" as so many often do.

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Differences between looping and simersaulting​
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Somersaulting- for longer distances.It bends the narrow end in the direction it wants to go & takes grip with tentacles. It releases the broad end and straightens up. like this it continues. looping- for shorter distances.


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What will an object weigh on the moon's surface if it weighs 190 n on earth's surface?
Greeley [361]
Turn your protracted to a 90 degree angle
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You turn on your car's headlights while driving at night. What transformation is taking place?
Galina-37 [17]

Answer: C.

Explanation:

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3 years ago
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Look at the advertisement. A poster that reads, "There's more to resistors than resistance. If you're really serious about cost,
ozzi

Options:

universal appeal

flattery

association

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Answer: Association

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Association Advertising is a type of Advertising where certain attributes which have been known to be associated with good and quality products are used to market the products to the target audience.

7 0
3 years ago
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To a good approximate, the only external force that does work on a cyclist moving on level ground is the force of air resistance
mart [117]

Answer:

a. 120 W

b. 28.8 N

Explanation:

To a good approximate, the only external force that does work on a cyclist moving on level ground is the force of air resistance. Suppose a cyclist is traveling at 15 km/h on level ground. Assume he is using 480 W of metabolic power.

a. Estimate the amount of power he uses for forward motion.

b. How much force must he exert to overcome the force of air resistance?

(a) He is 25% efficient, therefore the cyclist will be expending 25% of his power to drive the bicycle forward

Power = efficiency X metabolic power

= 0.25 X 480

= 120 W

(b)

power if force times the velocity

P = Fv

convert  15 km/h to m/s

v = 15 kmph = 4.166 m/s

F = P/v

= 120/4.166

= 28.8 N

definition of terms

power is the rate at which work is done

force is that which changes a body's state of rest or uniform motion in a straight line

velocity is the change in displacement per unit time.

3 0
3 years ago
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