Question:

What will be ratio of speed in first two seconds to the speed in next 4s4\,s ?

Updated On: Jul 2, 2022
  • 2:1 \sqrt{2}:1
  • 3:1 3:1
  • 2:1 2:1
  • 1:2 1:2
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The Correct Option is C

Solution and Explanation

v= Distance  Time taken v=\frac{\text { Distance }}{\text { Time taken }} As shown in given figure v1v2=s0t1s0t2=s0t1×t2s0\frac{v_{1}}{v_{2}}=\frac{\frac{s_{0}}{t_{1}}}{\frac{s_{0}}{t_{2}}}=\frac{s_{0}}{t_{1}} \times \frac{t_{2}}{s_{0}} v1v2=42=21\frac{v_{1}}{v_{2}}=\frac{4}{2}=\frac{2}{1} Therefore, the ratio of speeds is v1:v2=2:1v_{1}: v_{2}=2: 1
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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:

Difference Between Speed and Velocity

Read More: Difference Between Speed and Velocity