A toy cart starts from rest and rolls down a long smooth ramp with a steady acceleration of 1.6…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A toy cart starts from rest and rolls down a long smooth ramp with a steady acceleration of .
- How far does it roll in the th second?
- How far does it roll in the first seconds altogether?
Need a reminder? The key ideaShow
From rest with a steady acceleration , the distance in the th second is
so successive seconds cover distances in the ratio
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. The 8th second. .
Step 2. The first 8 s. .
Answer: (a) . (b) .
Check. The first give , and .
Watch out. "In the th second" is one second; "in seconds" is all of them.
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