Quiz

Question

Question 1 (3 points)

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A motorbike is travelling at 25 m/s when the rider opens the throttle so that the bike accelerates at 0.5 m/s2 for 20 seconds.

What is the velocity of the bike at the end of the 20 seconds?

Question 1 options:

40 m/s

45 m/s

30 m/s

35 m/s

Question 2 (3 points)

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Acceleration is defined as the CHANGE in

Question 2 options:

time it takes for one place to move to another place.

distance divided by the time interval

velocity of an object.

velocity divided by the time interval

Question 3 (3 points)

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The SI unit for acceleration is

Question 3 options:

ft/sec2

mph

m/s

m/s2

Question 4 (3 points)

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When are you undergoing an acceleration in a car?

Question 4 options:

speed up

make turns

all of the above

slow down

Question 5 (3 points)

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What is the correct formula for finding the time it takes to travel somewhere?

Question 5 options:

T= S/D

T= D/S

T = D x S

T= S x D

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Answer 1

Here are the answers to your quiz questions:

Question 1:
To find the final velocity \( v \) of the bike, use the formula:

\[ v = u + at \]

Where:

• \( u \) = initial velocity = 25 m/s
• \( a \) = acceleration = 0.5 m/s²
• \( t \) = time = 20 seconds

Plugging in the values:

\[ v = 25, \text{m/s} + (0.5, \text{m/s}^2 \times 20, \text{s}) \] \[ v = 25, \text{m/s} + 10, \text{m/s} \] \[ v = 35, \text{m/s} \]

Answer: 35 m/s

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Question 2:
Acceleration is defined as the CHANGE in

Answer: velocity of an object.

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Question 3:
The SI unit for acceleration is

Answer: m/s².

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Question 4:
When are you undergoing an acceleration in a car?

Answer: all of the above.

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Question 5:
What is the correct formula for finding the time it takes to travel somewhere?

Answer: T = D/S.

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Let me know if you have any more questions or need further assistance!