200 kmh-1
100 kmh-1
40 kmh-1
20 kmh-1
Correct answer is A
R = 110 + 90 = 200
Which of the following statements about moving particle is correct?
if the resultant force acting on the particle is zero, then it is in dynamic equillibrium
If the resultant force acting on the acting on the particle is greater than zero, then it is moving with a uniform velocity
the rate of change of its momentum with time tales place in a direction opposite to that of its motion
the particle falling freely covers equal distances in equal time interval
Correct answer is D
No explanation has been provided for this answer.
Which of the following statements about static friction is correct? It
is independent of the nature of the surface in contact
depends on the area of surface in contact
depends on the relative motion between the surface in contact
depends on the weight of the moving body
Correct answer is C
No explanation has been provided for this answer.
The types of motion which a cylindrical drum rolling down an inclined plane undergoes are
circular and translational
rotational and translational
rotational and circular
rectilinear and circular
Correct answer is B
No explanation has been provided for this answer.
What is the density of a fuel of relative density 0.72? [Density of water = 1000kg m-3]
72 kgm-3
720 kgm-3
7200 kgm-3
72000 kgm-3
Correct answer is B
P = 0.72 x 1000 = 720