Practice Rate of Change of Velocity - 7.3 | 7. Motion | CBSE 9 Science
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Rate of Change of Velocity

7.3 - Rate of Change of Velocity

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define velocity.

💡 Hint: Think about how speed alone differs from describing direction.

Question 2 Easy

What does uniform motion mean?

💡 Hint: Consider examples when speed doesn’t change.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the formula for calculating acceleration?

a = v - u / t
a = (v - u) / t
a = u + v

💡 Hint: Recall the specific terms involved in the equation.

Question 2

True or False: In uniform motion, acceleration is zero.

True
False

💡 Hint: Think about how speed remains constant.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A runner accelerates from 8 m/s to 20 m/s in 4 seconds. What is the runner's acceleration and how far do they travel in this time?

💡 Hint: Break it into two parts: first calculate acceleration, then use it to find distance.

Challenge 2 Hard

A jet fighter reduces its speed from 300 m/s to 100 m/s in 5 seconds. Calculate the acceleration and the distance covered during this time.

💡 Hint: Remember to consider the negative sign in acceleration when calculating distance.

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