JSUNIL TUTORIAL PUNJABI COLONY GALI NO. 01 C.B.S.E.-2012-Sample-Papers-for-IX-Physics + Chemistry-Summative-Assessment-I Physics (Section A) 1. Give an example of situation: one object with a constant acceleration but with a zero velocity. 1-marks 2. Define Inertia 2-marks 3. A motor boat starting from rest on a lake accelerates in a straight line at a constant rate of 3m/s2 for 8s. How far does the boat travel during this time? 2-marks 4. Differentiate between distance and displacement. 3-marks 5. Drive the equation for Newton’s second law of motion. 3-marks 6. A stone of 1 kg is thrown with a velocity of 20 m/s across the frozen surface of a lake comes to rest after travelling a distance of 50m. What is the force of friction between the stone and the ice?
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