1
JEE Main 2022 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A bullet is shot vertically downwards with an initial velocity of $$100 \mathrm{~m} / \mathrm{s}$$ from a certain height. Within 10 s, the bullet reaches the ground and instantaneously comes to rest due to the perfectly inelastic collision. The velocity-time curve for total time $$\mathrm{t}=20 \mathrm{~s}$$ will be:

(Take g = 10 m/s2).

A
JEE Main 2022 (Online) 27th July Morning Shift Physics - Motion in a Straight Line Question 50 English Option 1
B
JEE Main 2022 (Online) 27th July Morning Shift Physics - Motion in a Straight Line Question 50 English Option 2
C
JEE Main 2022 (Online) 27th July Morning Shift Physics - Motion in a Straight Line Question 50 English Option 3
D
JEE Main 2022 (Online) 27th July Morning Shift Physics - Motion in a Straight Line Question 50 English Option 4
2
JEE Main 2022 (Online) 29th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A small toy starts moving from the position of rest under a constant acceleration. If it travels a distance of 10m in t s, the distance travelled by the toy in the next t s will be :

A
10 m
B
20 m
C
30 m
D
40 m
3
JEE Main 2022 (Online) 29th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Two balls A and B are placed at the top of 180 m tall tower. Ball A is released from the top at t = 0 s. Ball B is thrown vertically down with an initial velocity 'u' at t = 2 s. After a certain time, both balls meet 100 m above the ground. Find the value of 'u' in ms$$-$$1. [use g = 10 ms$$-$$2] :

A
10
B
15
C
20
D
30
4
JEE Main 2022 (Online) 25th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Two buses P and Q start from a point at the same time and move in a straight line and their positions are represented by $${X_P}(t) = \alpha t + \beta {t^2}$$ and $${X_Q}(t) = ft - {t^2}$$. At what time, both the buses have same velocity?

A
$${{\alpha - f} \over {1 + \beta }}$$
B
$${{\alpha + f} \over {2(\beta - 1)}}$$
C
$${{\alpha + f} \over {2(1 + \beta )}}$$
D
$${{f - \alpha } \over {2(1 + \beta )}}$$
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