Kinematics (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 55 - 61 of 233

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Question number: 55

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

Two forces Fl = 5i + l0j - 20k and F2 = 10i - 5j - l5k act on a single point. The angle between Fj and F2 is nearly

Choices

Choice (4) Response

a.

30°

b.

90°

c.

45°

d.

60°

Passage

A = 2i + j + k and B = i + j + k are two vectors.

Question number: 56 (1 of 3 Based on Passage) Show Passage

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

the unit vector perpendicular to A is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 57 (2 of 3 Based on Passage) Show Passage

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

The unit vector parallel to A is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 58 (3 of 3 Based on Passage) Show Passage

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

the unit vector perpendicular to B is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 59

» Kinematics » Scalars and Vectors » Vector Addition and Subtraction

MCQ▾

Question

A boat is moving with a velocity 3i + 4j with respect to ground. The water in the river is moving with a velocity – 3i – 4j with respect to ground. The relative velocity of the boat with respect to water is

Choices

Choice (4) Response

a.

-6Equation - 8Equation

b.

6Equation + 8Equation

c.

8

Equation

d.

5 - Equation

Question number: 60

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

The three vectors A = 3i-2j + k, B = i-3j + 5k and C = 2i + j-4k form

Choices

Choice (4) Response

a.

isosceles triangle

b.

a right angled triangle

c.

no triangle

d.

an equilateral triangle

Question number: 61

» Kinematics » Velocity-Time Graphs

MCQ▾

Question

The speed of a boat is 5km/h in still water. It crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water is

Choices

Choice (4) Response

a.

4 km/h

b.

1 km/h

c.

5 km/h

d.

3 km/h

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