Question

Problem: The velocity of an object is the distance it travels per unit time. Suppose the velocity of a gliding bird is measured to be 223. cm/s. Calculate the time it will take the bird to travel 4.9 m. Be sure your answer has a unit symbol and the correct number of significant digits. Solution: v = t/s Write down the definition of velocity. t = vs Solve for time. t = (223.)(4.9 x 10^2) s Put in the data given. t = 1.093... x 10^5 s Use the calculator. t = 1.1 x 10^5 s Round to the correct number of significant digits. No mistakes

          Problem:
The velocity of an object is the distance it travels per unit time. Suppose the
velocity of a gliding bird is measured to be 223. cm/s. Calculate the time it will take
the bird to travel 4.9 m.
Be sure your answer has a unit symbol and the correct number of significant
digits.
Solution:
v = t/s Write down the definition of velocity.
t = vs Solve for time.
t = (223.)(4.9 x 10^2) s Put in the data given.
t = 1.093... x 10^5 s Use the calculator.
t = 1.1 x 10^5 s Round to the correct number of significant digits.
No mistakes

Show more…

Problem:
The velocity of an object is the distance it travels per unit time. Suppose the
velocity of a gliding bird is measured to be 223. cm/s. Calculate the time it will take
the bird to travel 4.9 m.
Be sure your answer has a unit symbol and the correct number of significant
digits.
Solution:
v = t/s Write down the definition of velocity.
t = vs Solve for time.
t = (223.)(4.9 x 10^2) s Put in the data given.
t = 1.093... x 10^5 s Use the calculator.
t = 1.1 x 10^5 s Round to the correct number of significant digits.
No mistakes

Added by Victor Manuel S.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Jennifer Hudspeth

07/06/2022

Step 1

1 meter = 100 cm, so 4.9 meters = 490 cm. Show more…

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Problem: The velocity of an object is the distance it travels per unit time. Suppose the velocity of a gliding bird is measured to be 223 cm/s. Calculate the time it will take the bird to travel 4.9 m. Be sure your answer has a unit symbol and the correct number of significant digits. Solution: Write down the definition of velocity. Solve for time. Put in the data given. Use the calculator. Round to the correct number of significant digits. No mistakes

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Transcript

00:02 Hi there.

00:03 This question is about velocity, and velocity is a derived unit.

00:08 We are told that velocity is obtained by taking the distance, something travels over.

00:31 Okay, so the velocity then, writing this as an equation, v is going to be equal to distance over time.

00:42 And we want to rearrange this now to solve for time.

00:48 Okay.

00:49 So to solve for time.

00:49 Okay.

00:49 So to solve for time i'm going to need to multiply both sides by t and divide both sides by v.

00:57 Because if i multiply both sides by t, t will cancel.

01:02 If i divide both sides by v, v on the left side will cancel.

01:08 So t is going to be equal to d over v.

01:15 Distance over velocity.

01:18 All right, moving on, it tells us to put in the given data.

01:22 So the time is going to be equal to the distance, well the distance is 4 .9 meters.

01:31 The velocity is 223 centimeters per second.

01:47 Okay, before we can go any further, we need to make sure our units agree.

01:52 Because we have meter in the numerator and centimeter in the denominator.

01:56 We need to convert meters to centimeters here in the numerator...

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