Please answer all questions
Answers
Answer:
44)C option
46)B option
48)B option
41)Option B [Always equal to 1]
42)Option C [2r]
The displacement is the minimum distance between the initial position and final position.
Suppose a particle starts at a point A at the periphery of the circle and after covering half the circle, particle is at point B.
The minimum distance between points A and B is AB which is also the diameter of the circle.
Therefore, displacement after covering half the circle =Diameter=2r
43)Option B[meter]
44)Option C[Always equal and opposite]
45)Option C
Force = 250N
Acceleration = 5m/s²
Mass = m = ?
We know that,
Force = Mass × Acceleration
F = ma
Hence
m = F/a
m = 250/5
m = 50kg
Therefore the correct option is option (C)250kg
46)Option B [N's second law]
47)Option C [It always goes away from the earth]
48)Option B[Always equal and opposite]
49)Option B[Car B slows]
The slope of distance vs time graphs represent speed. B has the minimum slope and hence the minimum speed.