A particle is moving in a straight line such that its velocity is increasing at 5 ms–1 per meter. The acceleration of the particle is _______ms–2 at a point where its velocity is 20 ms–1.
Correct Answer: 100
Solution and Explanation
\(\frac{dv}{ds}=5^{-1}/m\)
a=v \(\frac{dv}{ds}\)
=20×5=100 m/sec2
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Concepts Used:
Speed and Velocity
The rate at which an object covers a certain distance is commonly known as speed.
The rate at which an object changes position in a certain direction is called velocity.
Difference Between Speed and Velocity:
Read More: Difference Between Speed and Velocity