Motion in a Straight Line Test

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Motion in a Straight Line Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

A body, starting from rest and moving with a constant acceleration, covers a distance s₁ in the 4^th second and a distance s₂ in the 6^th second. The ratio s₁/s₂ is

A
2/3

B
4/9

C
6/11

D
7/11
Question 2
1 / -0

A car is moving at a certain speed. The minimum distance over which it can be stopped is x. If the speed of the car is doubled, what will be the minimum distance over which the car can be stopped during the same time?

A
4x

B
2x

C
x/2

D
x/4
Question 3
1 / -0

In Kinematics we study

A
Ways to find velocity without going into the causes of motion.

B
Ways to find jerk without going into the causes of motion.

C
Ways to describe motion without going into the causes of motion.

D
Ways to find acceleration without going into the causes of motion.

Solution

Kinematics is a branch of classical mechanics that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the mass of each or the forces that caused the motion.
Question 4
1 / -0

A ball falling from a tower of height 'h' covers a distance h/2 in the last second of its motion. What is the height of the tower? (Take g = 10 ms^–2)

A
58 m

B
50 m

C
60 m

D
55 m
Question 5
1 / -0

A body moving in a straight line with an initial velocity of 5 ms^–1 and a constant acceleration covers a distance of 30 m in the 3^rd second. How much distance will it cover in the next 2 seconds?

A
70 m

B
80 m

C
90 m

D
100 m
Question 6
1 / -0

A car starting from rest is accelerated at a constant rate α until it attains a speed v. It is then retarded at a constant rate β until it comes to rest. The average speed of the car for its entire journey is

A
zero

B
αv/2β

C
βv/2α

D
v/2
Question 7
1 / -0

The driver of a train A moving at the speed of 30 ms^–1 sights another train B moving on the same track towards his train at the speed of 10 ms^–1. He immediately applies brakes and achieves a uniform retardation of 4 ms^–2. To avoid head-on collision, what must be the minimum distance between the trains?

A
100 m

B
200 m

C
300 m

D
400 m
Question 8
1 / -0

Path length is a

A
scalar

B
tensor

C
Derived unit

D
vector

Solution

Path length has no particular direction and it depends upon the path chosen to reach the destination where displacement of the destination is absolute no matter what path is used to get there. So it is scaler.
Question 9
1 / -0

Path length is defined as.

A
distance from origin to origin.

B
the distance from origin to maximum point

C
the total length of the path traversed by an object

D
the distance from origin to minimum point

Solution

Path length is defined as the total length of the path traversed by an object.

Unlike displacement, which is the total distance an object travels from a starting point, path length is the total distance travelled, regardless of where it travelled.

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Re-Attempt Weekly Quiz Competition

Motion in a Straight Line Test - 2

Result

Motion in a Straight Line Test - 2

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SHARING IS CARING

Question 1

2/3

4/9

6/11

7/11

Question 2

4x

2x

x/2

x/4

Question 3

Ways to find velocity without going into the causes of motion.

Ways to find jerk without going into the causes of motion.

Ways to describe motion without going into the causes of motion.

Ways to find acceleration without going into the causes of motion.

Solution

Question 4

58 m

50 m

60 m

55 m

Question 5

70 m

80 m

90 m

100 m

Question 6

zero

αv/2β

βv/2α

v/2

Question 7

100 m

200 m

300 m

400 m

Question 8

scalar

tensor

Derived unit

vector

Solution

Question 9

distance from origin to origin.

the distance from origin to maximum point

the total length of the path traversed by an object

the distance from origin to minimum point

Solution

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