How Forces Affect Motion — Practice Quiz
CBSE · Class 9 · Science
Try a 4-question quiz on How Forces Affect Motion for CBSE Class 9 Science: tap an answer to check it and see why. 110 questions in the full chapter test.
Interactive on Super Tutor
Studying How Forces Affect Motion? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for practice quiz and more.
Free trial, no card needed.
One of 6 illustrations for How Forces Affect Motion in Super Tutor — alongside flashcards, concept maps and practice questions.
Quick Quiz: How Forces Affect Motion
0/4Tap an answer to check it instantly. No sign-up needed for these 4.
A 0.1 kg bullet is fired from a 5 kg gun with a force of 2 N. What are the initial accelerations of the bullet and the gun, and which value is larger?
A block of mass 25 kg is pushed with 55 N on a horizontal floor, and friction is 50 N. Find the acceleration and displacement in 2 s if the block starts from rest.
A sports car of mass 1500 kg moves east. Its velocity changes from 0 m/s to 10 m/s in 5 s. What force acts on the car during this interval?
A sports car of mass 1500 kg moves east and slows from 10 m/s to 0 m/s in 5 s. What is the force during this interval?
Sample Questions
A system has two boxes of masses 3 kg and 5 kg on a frictionless surface. If an external force of 16 N pulls the system, what is the acceleration of the system?
Show answer
2 m/s^2
For connected objects, treat them as one system. Total mass = 3 + 5 = 8 kg. So a = F/(m1 + m2) = 16/8 = 2 m/s^2.
A system of two connected boxes has masses 4 kg and 6 kg. If the external force is 20 N and the surface is frictionless, what is the acceleration?
Show answer
2 m/s^2
The total mass is 4 + 6 = 10 kg. Using a = F/(m1 + m2), a = 20/10 = 2 m/s^2.
A 30 kg barbell is held steady. Using g = 9.8 m/s^2, what upward force must balance its weight?
Show answer
294 N upward
Weight is F = mg = 30 × 9.8 = 294 N downward. To keep it steady, an equal upward force of 294 N is needed.
A force of 1 N acts on an object of mass 0.5 kg. What acceleration does the object get, and what would the force be if the same object had acceleration 4 m/s^2?
Show answer
2 m/s^2, then 2 N
First, a = F/m = 1/0.5 = 2 m/s^2. Then for the same mass, F = ma = 0.5 × 4 = 2 N.
+106 more questions on How Forces Affect Motion (CBSE Class 9 Science)
Practise AllFrequently Asked Questions
What are the important topics in How Forces Affect Motion for CBSE Class 9 Science?
How many practice questions are there for How Forces Affect Motion?
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for How Forces Affect Motion
Important Questions
Exam-style questions with answers
Revision Notes
Key points for last-minute revision
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect
Study Plan
Step-by-step plan for this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full How Forces Affect Motion chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for CBSE Class 9 Science. Free to start, no card needed.