Kinematics (NEET Physics): Questions 151 - 154 of 229

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Question number: 151

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A cricket ball of mass 200 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 24 m/sec; the force on the ball acts for 0.5 sec, then the average force exerted by the bat on the ball will be

Choices

Choice (4) Response

a.

400 N

b.

40 N

c.

4.8 N

d.

480 N

Question number: 152

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

A body whose mass 4 kg is acted upon by two forces (8i + 10j) N and (4i + 8j) N. The acceleration produced will be (in m/s 2) -

Choices

Choice (4) Response

a.

2i + 3j

b.

6i + 9j

c.

1/3 (G + 3)

d.

(3i + 2j)

Question number: 153

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A mass of 10 kg is hung to a spring balance in lift. If the lift is moving with an acceleration g/3 in upward & downward directions, choose the correct options related to the reading of the spring balance.

  1. 13.3 kg
  2. 66.7 kg
  3. 32.6 kg
  4. 0

Select the correct answers and mark it according to the following

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

1 and 3 are correct

c.

1, 2 and 3 are correct

d.

2 and 4 are correct

Question number: 154

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A ship is steaming towards east at a speed of 10 ms -1. A woman runs across the deck at a speed of 8 ms -1 in the direction at right angles to the direction of motion of the ship i. e. towards north. What is the velocity of the woman relative to sea?

Choices

Choice (4) Response

a.

11.64 m/s

b.

17 m/s

c.

12.806 m/s

d.

17.506 m/s

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