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Laws of motion

Total questions: 10

Worksheet time: 8mins

Name
Class
Date
1.

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

a)

Perpendicular component of normal force

b)

Parallel component of normal force

c)

frictional force

d)

gravitational force

2.

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

a)

2 m/s2

b)

-2 m/s2

c)

4 m/s2

d)

-4 m/s2

3.

The position vector of a particle is given by

 r =4t i + 6t2j +7 k\overrightarrow{r\ }=4t\ i\ +\ 6t^2j\ +7\ k  
The direction of force will be along

a)

x axis

b)

- x axis

c)

y axis

d)

z axis

4.

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)

a)

2.5 j

b)

2.5 k

c)

5 j

d)

-2.5 j

5.

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

a)

9.8 m/s2

b)

4.9 m/s2

c)

19.6 m/s2

d)

0 m/s2

6.

Choose the suitable physics behind the above circumstance

a)

acceleration

b)

frictional force

c)

impulsive force

d)

none of the option

7.

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

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

a)

29

b)

30

c)

33

d)

31

8.

If the coefficient of static friction is

 13\frac{1}{\sqrt{3}} 

What will be the angle of repose? 

a)

zero

b)

30

c)

45

d)

60

9.

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

a)

static friction

b)

kinetic friction

c)

rolling friction

d)

none of the option

10.

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

a)

no force acts on the object

b)

no net force acts on the object

c)

only external force acts on the object

d)

only kinetic friction acts on the object