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1. SECTION B
3 (a) Define the following terms 05
i) Rotation of body
ii) Rigid body
iii) Momentum
iv) Force
v) Brittle material
(b) A vehicle of mass 2 tones moving in downward to slopping road has a frictional resistance of 50N/tone. As
one instant the speed of vehicle at the top of inclined was observed to be 36kmph. Find the speed of vehicle after
running down the inclined for 100 sec.Take slope of inclined is 1:80 05
OR
4 (a) A vehicle of mass 500kg, is moving with a velocity of 25m/s. A force of 200N acts it for 2min. Find the
velocity of vehicle;
i) When the force acts in the direction of motion.
ii) When the force acts in the direction opposite of motion. 05
(b) Explain in brief the Newton’s Ist & IIed Law 05
(Best Luck)
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