A garden snail moves in a straight line from rest to 1.28 cm s$^{-1}$, with a constant acceleration in 1.8 seconds - AQA - A-Level Maths Mechanics - Question 10 - 2018 - Paper 2
Question 10
A garden snail moves in a straight line from rest to 1.28 cm s$^{-1}$, with a constant acceleration in 1.8 seconds.
Find the acceleration of the snail.
Circle your... show full transcript
Worked Solution & Example Answer:A garden snail moves in a straight line from rest to 1.28 cm s$^{-1}$, with a constant acceleration in 1.8 seconds - AQA - A-Level Maths Mechanics - Question 10 - 2018 - Paper 2
Step 1
Find the initial velocity
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Answer
The snail starts from rest, so the initial velocity, u=0 cm s−1.
Step 2
Find the final velocity
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Answer
The final velocity, v=1.28 cm s−1.
Step 3
Use the formula for acceleration
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Answer
The formula for acceleration is given by:
a=tv−u
Substituting the values:
a=1.81.28−0
This simplifies to:
a=1.81.28
Step 4
Calculate the acceleration
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Answer
Calculating the acceleration gives:
a≈0.7111 cm s−2, which is approximately 0.71 cm s−2.
Step 5
Convert to m s$^{-2}$
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Answer
To convert to m s−2, we need to divide by 100:
a≈0.0071m s−2
Step 6
Circle your answer
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