A car moves a distance of 200 m. It covers the first-half of the distance at speed v. The average speed is 48 km/h. Find the value of v.

(A)

56 km/h

(B)

60 km/h

(C)

50 km/h

(D)

48 km/h

Question-2

A car travels for half of its time at 80 km/h and for the rest half time at 40 km/h. Total distance covered is 60 km. What is the average speed of the car?

(A)

60 km/h

(B)

80 km/h

(C)

120 km/h

(D)

180 km/h

Question-3

A body is thrown vertically upwards from the ground. It reaches a maximum height of 20 m in 5s. After what time it will reach the ground from its maximum height position?

(A)

2.5 s

(B)

5 s

(C)

10 s

(D)

25 s

Question-4

A ball P is dropped vertically and another ball Q is thrown horizontally from the same height and at the same time. If air resistance is neglected, then,

(A)

Ball P reaches the ground first

(B)

Ball Q reaches the ground first

(C)

Both the balls reach the ground at the same time

(D)

Respective masses of the two balls will decide the time

Question-5

Three different objects of masses m_{1}, m_{2} and m_{3} are allowed to fall from rest and from the same point O along three different friction less paths. The speeds of the three objects on reaching the ground will be in the ratio of

(A)

m_{1}: m_{2} : m_{3}

(B)

m_{1} : 2m_{2 }: 3m_{3}

(C)

1 : 1 : 1

(D)

Question-6

The water drops fall at regular intervals from a tap 5 m above the ground. The third drop is leaving the tap at an instant when the first drop touches the ground. How far above the ground is the second drop at that instant?( Take g = 10m/s^{2})

(A)

1.25 m

(B)

2.50 m

(C)

3.75 m

(D)

5.00 m

Question-7

A stone released with zero velocity from the top of a tower, reaches the ground in 4 s. The height of the tower is ( g = 10m/s^{2})

(A)

20 m

(B)

40 m

(C)

80 m

(D)

160 m

Question-8

A body falling from rest describes distances S_{1}, S_{2} and S_{3} in the first, second and third seconds of its fall. The ratio of S_{1} : S_{2} : S_{3} is

(A)

1 : 2 : 3

(B)

1 : 3 : 5

(C)

1 : 1 : 1

(D)

1 : 4 : 9

Question-9

A train of 150 m length is going towards north direction at a speed of 10m/s. A parrot flies at the speed of 5 m/s towards south direction parallel to the railways track.The time taken by the parrot to cross the train is

(A)

12 s

(B)

8 s

(C)

15 s

(D)

10 s

Question-10

A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q separated by a distance with velocity 30 km/h and 40 km/h respectively. The velocity of the car midway between P and Q is

(A)

33.3 km/h

(B)

20 √2 km/h

(C)

25 √2 km/h

(D)

0.35 km/h

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