Laws of Motion (NEET Physics): Questions 24 - 27 of 114

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Question number: 24

» Laws of Motion » Force and Inertia

MCQ▾

Question

A car is moving in a circular path of radius 50 m with velocity of 100 m/sec such that in each sec its velocity increases by 100 m/s, the net acceleration of car will be - (in m/sec)

Choices

Choice (4) Response

a.

300.10

b.

10.70

c.

100.20

d.

223.60

Question number: 25

» Laws of Motion » Force and Inertia

MCQ▾

Question

An aircraft loops the loop of radius R = 600 m with a constant velocity v = 360 km/h. The weight of the flyer of mass m = 60 kg in the lower, upper and middle points of the loop will respectively be

Choices

Choice (4) Response

a.

210 N, 700 N, 1400 N

b.

1600 N, 400 N, 1000 N

c.

700 N, 1400 N, 210 N

d.

2100 N, 700 N, 1400 N

Question number: 26

» Laws of Motion » Force and Inertia

MCQ▾

Question

A swimmer can swim in still water at a rate 4 km/h. If he swims in a river flowing at 3 km/h and keeps his direction (w. r. t. water) perpendicular to the current. Find his velocity w. r. t. the ground.

Choices

Choice (4) Response

a.

11.40 km/hr

b.

15.05 km/hr

c.

30.20 km/hr

d.

17 km/hr

Question number: 27

» Laws of Motion » Force and Inertia

MCQ▾

Question

A cricket ball of mass 250 gm moving with a velocity of 25 m/s is hit by a bat so that it acquires a velocity of 30 m/s in the opposite direction. The force acting on the ball, if the contact time is 1/100 of a second, will be -

Choices

Choice (4) Response

a.

632.5 N in the initial direction of ball

b.

1300 N in the final direction of ball

c.

1.345 N in the initial direction of ball

d.

130 N in the final direction of ball

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