Per NCERT §4.3 (frictionless horizontal surface), a body moving on it must do which?
AReverse its direction
BDecelerate and stop
CContinue with constant velocity
DContinually accelerate forward
Answer & Solution
Correct answer: C. Continue with constant velocity
NCERT §4.3: no horizontal force ⇒ no acceleration ⇒ constant velocity. This is Galileo's inertia law.
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