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Eshita Rastogi
Subject: Physics
, asked on 24/5/18
an aeroplane is flying with a uniform speed of 100km/h around the circumference of a circle .what will be the change in velocity in (1/4)th of the round? how much in (1/2) round( ans is 140km/hr and 200km/hr)
Answer
1
Nishant Kumar
Subject: Physics
, asked on 23/5/18
A rocket is fired vertically from the ground with a vertical acccerleration of 10m/s.The fuel is finished in 1min and it continues to move up.What is the maximum height reached
Answer
3
Neil Singh
Subject: Physics
, asked on 22/5/18
Please give me the mathematical proof of the three equations of motion.
Answer
1
Dipesh Kumar Karesia
Subject: Physics
, asked on 22/5/18
how to calculate velocity from position-time graph::: we have to calculate the length of slope or anything other...?
Answer
2
Dipesh Kumar Karesia
Subject: Physics
, asked on 22/5/18
how to integrate this ... plz solve by explaining each little step...?
Q).
S
=
∫
0
5
3
t
2
d
t
Answer
1
Dev Puri
Subject: Physics
, asked on 20/5/18
Q. Given below is a v-t graph. Draw a corresponding a-t graph and explain the motion of the body through the graph
Answer
1
Romil Singh
Subject: Physics
, asked on 19/5/18
multiple options are correct
Q.112. The forces each numerically equal to 5 N, are acting as shown in the figure.
(A) The magnitude of resultant force is 5
3
N
(B) The magnitude of resultant force is 5 N
(C) The resultant vector is at 30
°
with + ve x axis
(D) The resultant vector is at 120
°
with + ve x axis
Answer
2
Deepanshi Garg
Subject: Physics
, asked on 19/5/18
A stone is dropped into a well and the sound of splash is heard after 5.33 seconds. if the water is at the depth of 122.5 m from the ground . the velocity of sound in air is
Answer
1
Deepanshi Garg
Subject: Physics
, asked on 19/5/18
From the top of a tower 36 m high, a body is dropped and at the same time another body is projected vertically upwards from the ground . if they meet mid-way , find the initial velocity of the projected body and its velocity when two bodies come together.
Answer
1
Romil Singh
Subject: Physics
, asked on 19/5/18
Solve this:
Q.10. The velocity of a moving point v =
2
t
+
8
t
-
2
m/s. Find the path covered by the point during the
2
n
d
second.
Answer
1
Romil Singh
Subject: Physics
, asked on 19/5/18
Solve this:
Q.9. A point moves with velocity v =
9
t
2
-
8
t
m/ s. Find the path covered by the point during the fourth second.
Answer
1
Romil Singh
Subject: Physics
, asked on 19/5/18
Solve this:
30. The acceleration of a particle moving along x axis varies as
a = 2t - 3 m/ s
2
where t is in seconds. If velocity at t = 1s is 2 m /s then the velocity at t = 3s is
(A) 6 m/s (B) 8 m/s (C) 10 m/s (D) 4 m/s
Answer
1
Romil Singh
Subject: Physics
, asked on 19/5/18
If
P
→
=
Q
→
then which of the following is NOT correct
(A)
P
^
=
Q
^
(B)
P
→
=
Q
→
(C)
P
Q
^
=
Q
P
^
(D)
P
→
+
Q
→
=
P
^
+
Q
^
Answer
1
Romil Singh
Subject: Physics
, asked on 19/5/18
Solve this:
Q.7. If the sum of two unit vectors is a unit vector, then magnitude of difference is
(A)
2
(B)
3
(C)
1
2
(D)
5
Answer
3
Neil Singh
Subject: Physics
, asked on 18/5/18
Why is path length a scalar quantity?? By the help of the co-ordinate system we can easily say what the direction of magnitude is. Since the direction can be known with the +or- sign then it should be a vector quantity. Pls explain.
Answer
1
1
2
3
4
5
Next
What are you looking for?
Q).
Q.112. The forces each numerically equal to 5 N, are acting as shown in the figure.
(A) The magnitude of resultant force is 5 N
(B) The magnitude of resultant force is 5 N
(C) The resultant vector is at 30 with + ve x axis
(D) The resultant vector is at 120 with + ve x axis
Q.10. The velocity of a moving point v = m/s. Find the path covered by the point during the second.
Q.9. A point moves with velocity v = m/ s. Find the path covered by the point during the fourth second.
30. The acceleration of a particle moving along x axis varies as
a = 2t - 3 m/ s2
where t is in seconds. If velocity at t = 1s is 2 m /s then the velocity at t = 3s is
(A) 6 m/s (B) 8 m/s (C) 10 m/s (D) 4 m/s
(A) (B) (C) (D)
Q.7. If the sum of two unit vectors is a unit vector, then magnitude of difference is
(A)
(B)
(C)
(D)