Motion in a Straight Line Test

Result

Motion in a Straight Line Test - 22

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Weekly Quiz Competition

Question 1
4 / -1

The acceleration due to gravity on the planet A is 9 times the acceleration due to gravity on planet B. A man jumps to a height of 2 m on the surface of A. What is the height of jump by the same person on the planet B

A
18 m

B
6 m

C

D

Solution
Question 2
4 / -1

If a body is thrown up with the velocity of 15 m/s then maximum height attained by the body is (g = 10 m/s²)

A
11.25 m

B
16.2 m

C
24.5 m

D
7.62 m

Solution
Question 3
4 / -1

A packet is dropped from a balloon which is going upwards with the velocity 12 m/s, the velocity of the packet after 2 seconds will be

A
–12 m/s

B
12 m/s

C
–7.6 m/s

D
7.6 m/s

Solution
Question 4
4 / -1

If a freely falling body travels in the last second a distance equal to the distance travelled by it in the first three second, the time of the travel is

A
6 sec

B
5 sec

C
4 sec

D
3 sec

Solution
Question 5
4 / -1

The effective acceleration of a body, when thrown upwards with acceleration a will be

A

B

C

D

Solution
Question 6
4 / -1

A ball is dropped from a high rise platform at t = 0 starting from rest. After 6 seconds another ball is thrown downwards from the same platform with a speed v. The two balls meet at t = 18s. What is the value of v. (take g = 10 m/s²)

A
60 m/s

B
75 m/s

C
55 m/s

D
40 m/s

Solution
Question 7
4 / -1

A ball is thrown up under gravity (g = 10 m/sec²). Find its velocity after 1.0 sec at a height of 10 m

A
5 m/sec²

B
5 m/sec

C
10 m/sec

D
15 m/sec
Question 8
4 / -1

Two stones of equal masses are dropped from a rooftop of height h one after another. Their separation distanceagainst time will

A
Remain the same

B
Increase

C
Decrease

D
Be zero

Solution
Question 9
4 / -1

At t = 0, a stone of mass 10 gm is thrown straight up from the ground level with a speed 10 m/s. After 1 s, a second stone of the same mass is thrown from the same position with a speed 20 m/s. What is the position of the first stone from the ground level at the moment?(Take g = 10 m/s²)

A
10 m

B
1 m

C
2 m

D
5 m

Solution
Question 10
4 / -1

The ratios of the distances traversed, in successive intervals of time by a body, falling from rest, are

A
1 : 3 : 5 : 7 : 9 : …

B
2 : 4 : 6 : 8 : 10 : ...

C
1 : 4 : 7 : 10 : 13 : …

D
None of these

Solution