Kinematics-Average Speed and Instantaneous Velocity (NEET Physics): Questions 104 - 108 of 108

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 104

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The rate of burning of fuel in a rocket is 30 gm/sec. and comes out with and velocity 6 x 10 3 m/s. The force exerted by gas on rocket will be –

Choices

Choice (4) Response

a.

200 N

b.

300 N

c.

180 N

d.

2.5 x l0 6 N

Question number: 105

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A body of mass 10 kg moving with a velocity of 5 m/s, rebounds on a wall with same velocity. The impulse on the body is -

Choices

Choice (4) Response

a.

100 Ns

b.

30 Ns

c.

120 Ns

d.

60 Ns

Question number: 106

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A cricket ball of mass 100 g is moving with a velocity of 10m/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.

480 N

b.

40 N

c.

200 N

d.

48 N

Question number: 107

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The rate of burning of fuel in a rocket is 50 gm/sec. and comes out with and velocity 4 x 10 3 m/s. The force exerted by gas on rocket will be –

Choices

Choice (4) Response

a.

2.5 x l0 4 N

b.

250 N

c.

2.5 x l0 6 N

d.

200 N

Question number: 108

» Kinematics » Average Speed and Instantaneous Velocity

Appeared in Year: 2016

MCQ▾

Question

Two cars P and Q start from a point at the same time in a straight line and their positions are represented by XP(t)=at+bt2 and XQ(t)=ftt2 . At what time do the cars have the same velocity?

Choices

Choice (4) Response

a.

a+f2(1+b)

b.

a+f2(b1)

c.

af1+b

d.

fa2(1+b)

Sign In