1:
A body falls freely under gravity. The distances covered in 1st, 2nd and 3rd second in the ratio

Options:

- 1:3:5
- 1:2:3
- 1:4:9
- 1:4:6

Answer: Option 1

Explanation:

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2:
A body released from the top of tower covers 20 m in last 2 seconds. Uf g =10 m/s2, the height of the tower is

Options:

- 60m
- 45 m
- 80 m
- 50 m

Answer: Option 2

Explanation:

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3:
A car travels half of the distance with speed 40 km/h and remaining half with 60 km/h. The average speed of the car is

Options:

- 50 km/h
- 48 km/h
- 100 km/h
- 20 km/h

Answer: Option 2

Explanation:

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4:
Starting from rest, a body moves with uniform acceleration 8 m/s2, the distance travelled in 5th second is

Options:

- 36 m
- 40 m
- 100 m
- zero

Answer: Option 1

Explanation:

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5:
A train is moving with velocity 72 km/h. The retardation required to stop it after 200 m is ------ m/s2.

Options:

- 2
- 20
- 1
- 10

Answer: Option 3

Explanation:

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6:
Velocity of projection upwards is 15 m/s, the maximum height attained is

Options:

- 11.25 m
- 16.2 m
- 24.4 m
- 7.62 m

Answer: Option 1

Explanation:

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7:
A body projected upward reaches height h and comes to original place of projection, then

Options:

- distance travelled by body is zero
- the average speed is zero
- displacement is 2h
- displacement is zero

Answer: Option 4

Explanation:

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8:
A ball projected vertically up reaches height h in time t, value of h in time 1/2 will be

Options:

- 7h/8
- 3h/4
- h/2
- h/4

Answer: Option 2

Explanation:

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9:
The motion of molecules of gas is

Options:

- one dimensional
- two dimensional
- three dimensional
- only up and down

Answer: Option 3

Explanation:

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10:
Ratio beween maximum range and square of time of flight in projectile motion is

Options:

- 10:49
- 49:10
- 98:10
- 10:98

Answer: Option 2

Explanation:

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