Motion in a Straight Line Test

Result

Motion in a Straight Line Test - 34

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Question 1
4 / -1

A body starts from rest. What is the ratio of the distance travelled by the body during the 4th and 3rd second?

A
7/5

B
5/7

C
7/3

D
3/7

Solution
Question 2
4 / -1

The acceleration \'a\' in m/s² of a particle is given by a = 3t² + 2t + 2, where t is the time. If the particle starts out with a velocity u = 2 m/s at t = 0, then the velocity at the end of 2 sec is

A
12 m/s

B
18 m/s

C
27 m/s

D
36 m/s

Solution
Question 3
4 / -1

For a moving body at any instant of time

A
if the body is not moving, the acceleration is necessarily zero

B
if body is slowing, the retardation is negetive

C
if the body is slowing, the distance is negetive

D
if displacement, velocity and acceleration at that instant are known, we can find the displacement at any given time in future
Question 4
4 / -1

What is the relation between displacement, time and acceleration in case of a body having uniform acceleration ?

A

B

C

D
None of these
Question 5
4 / -1

Two cars A and B at same point initially. If A starts with uniform velocity of 40 m/sec and B starts in the same direction with constant acceleration of 4m/s²

A
10 sec

B
20 sec

C
30 sec

D
35 sec
Question 6
4 / -1

A body travels for 15 sec starting from rest with constant acceleration. If it travels distances S₁, S₂ and S₃ is

A

B

C

D

Solution
Question 7
4 / -1

A particle travels 10 m first 5 sec and 10 m in next 3 sec. Assuming constant acceleration, what is the distance travelled in next 2 sec?

A
8.3 m

B
9.3 m

C
10.3 m

D
None of these

Solution
Question 8
4 / -1

The motion of a particle is described by the equation u = at . The distance travelled by the particle in the first 4 sec

A
4a

B
12a

C
6a

D
8a

Solution
Question 9
4 / -1

The position of a particle moving along the x-axis at certain is given below
which of the following describes the motion correctly?

A
Uniform, accelerated

B
Uniform, decelerated

C
Non-uniform, accelerated

D
There is not enough data for generalization

Solution
Question 10
4 / -1

Consider the acceleration, velocity and displacement of a tennis ball it falls to the ground and bounces back. Directions of which of these changes in the process

A
Velocity only

B
Displacement and velocity

C
Acceleration velocity and displacement

D
Displacement and acceleration