Laws of motion

A Horse is able to pull the cart forward due to _________

• Perpendicular component of normal force

• Parallel component of normal force

• frictional force

• gravitational force

If the mass of the object is 8.5 kg. What will be the acceleration along - x direction?

• 2 m/s²

• -2 m/s²

• 4 m/s²

• -4 m/s²

The position vector of a particle is given by

 $\overrightarrow{r\ }=4t\ i\ +\ 6t^2j\ +7\ k$  
The direction of force will be along

• x axis

• - x axis

• y axis

• z axis

If the mass of A and B are 5 kg and 3 kg respectively. What will be the acceleration of B? (Take g = 10 m/s²)

• 2.5 j

• 2.5 k

• 5 j

• -2.5 j

What will be the acceleration of an object moving on an inclined plane of 30⁰ ?

• 9.8 m/s²

• 4.9 m/s²

• 19.6 m/s²

• 0 m/s²

Choose the suitable physics behind the above circumstance

• acceleration

• frictional force

• impulsive force

• none of the option

If the banking angle is 45⁰ and the radius of the road is

100 m. The safe speed will be ______ m/s.

• 29

• 30

• 33

• 31

If the coefficient of static friction is

 $\frac{1}{\sqrt{3}}$ 

What will be the angle of repose? 

• zero

• 30

• 45

• 60

Among the following quantities which will cause less loss in kinetic energy?

• static friction

• kinetic friction

• rolling friction

• none of the option

When an object is moving at constant velocity on the rough surface

• no force acts on the object

• no net force acts on the object

• only external force acts on the object

• only kinetic friction acts on the object