Motion in a Straight Line Test

Result

Motion in a Straight Line Test - 19

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Question 1
4 / -1

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of

A
3s

B
5s

C
7s

D
9s

Solution
Question 2
4 / -1

A body is thrown vertically upwards. If air resistance is to be taken into account, them the time during which the body rises is

A
Equal to the time of fall

B
Less than the time of fall

C
Greater than the time of fall

D
Twice the time of fall

Solution
Question 3
4 / -1

A ball P is dropped vertically and another ball Q is thrown horizontally with the same velocities from the same height and at the same time. If air resistance is neglected, then

A
Ball P reaches the ground first

B
Ball Q reaches the ground first

C
Both reach the ground at the same time

D
The respective masses of the two balls will decide the time

Solution
Question 4
4 / -1

A body is released from a great height and falls freely towards the earth. Another body is released from the same height exactly one second later. The separation between the two bodies, two seconds after the releaseof the second body is

A
4.9 m

B
9.8 m

C
19.6 m

D
24.5 m

Solution
Question 5
4 / -1

An object is projected upwards with a velocity of 100 m/s. It will strike the ground after (approximately)

A
10 sec

B
20 sec

C
15 sec

D
5 sec

Solution
Question 6
4 / -1

A body is released from the top of a tower of height h. It takes t sec to reach the ground. Where will be the ballafter time t/2 sec

A
At h/2 from the ground

B
At h/4 from the ground

C
Depends upon mass and volume of the body

D
At 3h/4 from the ground

Solution
Question 7
4 / -1

A frictionless wire AB is fixed on a sphere of radius R. A very small spherical ball slips on this wire. The time taken by this ball to slip from A to B is

A

B

C

D

Solution
Question 8
4 / -1

A particle is projected up with an initial velocity of 80 ft/sec. The ball will be at a height of 96ft from the ground after

A
2.0 and 3.0 sec

B
Only at 3.0 sec

C
Only at 2.0 sec

D
After 1 and 2 sec

Solution
Question 9
4 / -1

A body falls from rest, its velocity at the end of first second is (g = 32ft/sec)

A
16 ft/sec

B
32 ft/sec

C
64 ft/sec

D
24 ft/sec

Solution
Question 10
4 / -1

When a ball is thrown up vertically with velocity V₀, it reaches a maximum height of \'h\'. If one wishes to triple the maximum height then the ball should be thrown with velocity

A

B

C

D

Solution