An object is in uniform accelerated motion. What will be velocity time graph for the motion if (a) u = +ve, a= -ve (b) u = -ve, a= -ve (c) u = -ve, a= +ve 3 Data for questions 14,15,16 SI unit of latent heat is J/kg Latent heat of a substance depends on mass and heat absorbed by it to change its state In an experiment data for mass and heat are calculated S.No. Mass(kg) 1 2.54 2 2.52 3 2.56 S.No. Heat(J) 1 3.05 2 2.98 3 2.96
Answers
Answer:
person in moving from A to B is :
a) b) 2
c) 2
-1 d) 2
14. In Q.No. 12, if the person goes round the
whole circle and returns to point A, then his
displacement is :
a) 2 b) 2
-1
c) d) zero
15. In Q.No. 12, the distance covered by the
person in going around one trip is :
a) 2 b) 2
c) d) zero
16. An object is projected upward with velocity
of 98m/s. It will strike the ground in
approximately :
a) 5s b) 20s
c) 10s d) s
17. A body traveling with a constant velocity
has an acceleration equal to :
a) Infinity b) unity
c) zero d) can’t say
18. When a body is at rest, its velocity is :
a) zero b) positive
c) negative d) unity
19. The speed of a car increases from 36 km/
hr to 72 km/hr in 10 seconds. Then its
acceleration is :
a) 1m/s2 b) 2m/s2
c) 3 m/s2 d) 4m/s
Answer:
sorry i don't understand the question