1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

The initial speed of a body of mass 2.0 kg is 5 m/s. A force acts for 4 s in the direction of motion of the body, as shown in force-time graph. The impulse of force is

A
8.50 Ns
B
8 Ns
C
5.5 Ns
D
6 Ns
2
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

A uniform rod AB of length L = 1 m is sliding along two mutually perpendicular surfaces OP and OQ as shown in the figure.

When the rod subtends an angle $$\theta$$ = 30$$^\circ$$ with OQ, the end B has a velocity $$\sqrt3$$ m/s. The velocity of end A at that time is

A
1 m/s
B
0.5 m/s
C
$$\sqrt3$$ m/s
D
$${1 \over {\sqrt 3 }}$$ m/s
3
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

A block of mass 10 kg rests on a rough inclined plane making an angle of 30$$^\circ$$ with the horizontal. The coefficient of static friction between the block and the plane is 0.1. The friction force on the block is

A
4.9 N
B
49$$\sqrt3$$ N
C
49 N
D
0.1 $$\times$$ 49$$\sqrt3$$ N
4
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

When a body is dropped from a height h, then it hits the ground with a momentum p. If the same body is dropped from a height which is three times more than previous height, the percentage change in momentum when it hits the ground is

A
25%
B
50%
C
75%
D
100%
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