Kinematics-Average Speed and Instantaneous Velocity (NEET Physics): Questions 22 - 26 of 108

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Question number: 22

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The length of second’s hand in a watch is 1 cm. The change in velocity of its tip in 15 second is –

Choices

Choice (4) Response

a.

π302cm/s

b.

π230cm/s

c.

π30cm/s

d.

0

Question number: 23

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A ball is thrown from the top of a tower with an initial velocity of 10 m/s at an angle of 30° above the horizontal. It hits the ground at a distance of 17.3 m from the base of the tower. The height of the tower (g = 10 m/s2) will be

Choices

Choice (4) Response

a.

10m

b.

110m

c.

100m

d.

12m

Question number: 24

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The vertical section of a road over a canal bridge in the direction of its length is in the form of circle of radius 8.9 meter. Find the greatest speed at which the car can cross this bridge without losing contact with the road at its highest point, the center of gravity of the car being at a height h = 1.1 meter from the ground. (Take g = 10 m/sec2)

Choices

Choice (4) Response

a.

7 m/s

b.

10 m/s

c.

5 m/s

d.

13 m/s

Question number: 25

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A projectile can have the same range R for two angles of projections. If t1 and t2 be the times of flight in two cases, then choose the incorrect relations –

Choices

Choice (4) Response

a.

t 1 t 2 R2

b.

t 1 t 2 1R t 1 t 2 R

c.

t 1 t 2 1R

d.

t 1 t 2 1R2

Question number: 26

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The angular displacement of a particle is given by θ=ω0t+12αt2 where co0 and a are constant and ∞0 = 1 rad/sec, α = 1.5 rad/sec2. The angular velocity at time, t = 2 sec will be (in rad/sec) –

Choices

Choice (4) Response

a.

5

b.

1

c.

3

d.

4

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