Kinematics-Average Speed and Instantaneous Velocity (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 49 - 53 of 108

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Question number: 49

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A car of 500 kg moving with a velocity of 18 km/hr is stopped by the brake force of 500 N. The distance covered by it before coming to rest is –

Choices

Choice (4) Response

a.

1.44 m

b.

12.5 m

c.

12 m

d.

16.2 m

Question number: 50

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A train has to negotiate a curve of radius 600 m. By how much should the outer rail be raised with respect to inner rail for a speed of 48 km/hr. The distance between the rails is 2 m.

Choices

Choice (4) Response

a.

12 m

b.

12 cm

c.

4.5 m

d.

4.5 cm

Question number: 51

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A body of mass 0.02 kg falls from a height of 5 meter into a pile of sand. The body penetrates the sand a distance of 5 cm before stopping. What force has the sand exerted on the body?

Choices

Choice (4) Response

a.

1.96 N

b.

-0.196 N

c.

-19.6 N

d.

0.0196 N

Question number: 52

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

Two bodies P and Q are moving along positive x-axis their position-time graph is shown below. If VPQ is velocity of P w. r. t. Q and VQP is velocity of Q w. r. t P, then

Select the correct answers and mark it according to the following codes:

(1)

(2)

(3)

(4)

Choices

Choice (4) Response

a.

1,2 and 3 are correct

b.

2 and 4 are correct

c.

1 and 3 are correct

d.

1 and 2 are correct

Question number: 53

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A cricket ball of mass 150 g is moving with a velocity of 12m/sec and is hit by a bat so that the ball is turned back with a velocity of 20 m/sec; the force on the ball acts for 0.01 sec, then the average force exerted by the bat on the ball will be

Choices

Choice (4) Response

a.

40 N

b.

48 N

c.

400 N

d.

480 N

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