Question 1

A bus decreases its speed from 80 km/hr to 60 km/hr in 5 s. Find the acceleration of the bus

Accepted Answer

-1.112 m/s$^2$

Answer

1.112 m/s$^2$

Answer

-1.112 m/s

Answer

1.112 m/s

Question 2

The moment of a force about a point in its line of action is

Accepted Answer

0

Answer

1

Answer

-1

Answer

Infinity

Question 3

The formula for calculating power is given by

Accepted Answer

Force X velocity

Answer

Force X acceleration

Answer

Force X distance in the direction of force

Answer

Mass X acceleration

Question 4

Centripetal force is acting

Accepted Answer

towards the centre

Answer

away from the centre

Answer

along the curve

Answer

tangential

Question 5

A body is havig circular motion with angular acceleration 2 rad/s$^2$ with a radius of path equal to 5 m. The tangential acceleration is given by

Accepted Answer

10 m/s$^2$

Answer

2 m/s$^2$

Answer

1 m/s$^2$

Answer

5 m/s$^2$

Question 6

Unit of angular velocity is

Accepted Answer

rad/s

Answer

rad/s$^2$

Answer

m/s

Answer

m/s$^2$

Question 7

For a body rotating at 60 rpm, the angular velocity is given by

Accepted Answer

2 $\pi$ rad/s

Answer

120 $\pi$ rad/s

Answer

2 rad/s

Answer

12 $\pi$ rad/s

Question 8

If the mass of each body is doubled keeping the distance between them same, the gravitational force of attraction between the bodies becomes

Accepted Answer

4 times

Answer

2 times

Answer

1/4 times

Answer

1/2 times

Question 9

Recoil of a gun is based on

Accepted Answer

Newton's 3rd law

Answer

Newton's 2nd law

Answer

Newton's 1st law

Answer

Law of gravity

Question 10

When the radius of a circle is doubled, its polar moment of inertia becomes

Accepted Answer

16 times

Answer

2 times

Answer

4 times

Answer

8 times

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