Motion and Time Test

Result

Motion and Time Test - 7

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Weekly Quiz Competition

Question 1
1 / -0

A 100 m long train crosses a 10 m long bridge at a speed of 70 km/hr. How much time will it take to cross the bridge completely?

A
165 s

B
5.65 s

C
5.35 s

D
5.05 s
Question 2
1 / -0

Rajan swims in a 60 m wide pool and covers a distance of 120 m in 1 minute from one end to the other, and back along a straight path. Find his average speed and average velocity, respectively.

A
0 ms-¹, 2 ms^-1

B
2 ms-¹, 0 ms^-1

C
0 ms^-1, 0 ms^-1

D
None of these
Question 3
1 / -0

A 100 meter long train takes 7seconds to cross a man walking at the rate of 5 km/hr in the direction opposite to that of the train. Calculate the speed of the train.

A
1.38 km/hr

B
8.8 km/hr

C
45 km/hr

D
km/hr
Question 4
1 / -0

A man can swim upstream at the rate of 8 km/hr and downstream at 10.6 km/hr. Find his speed in still water and the rate of current respectively.

A
1.3 km/hr, 9.3 km/hr

B
9.3 km/hr, 1.3 km/hr

C
2.5 k/hr, 7.5 km/hr

D
3km/hr, 1.5km/hr
Question 5
1 / -0

A man walking atth of his usual speed reaches his office 15 minutes late. What is the usual time of reaching the office?

A
40 minutes

B
45 minutes

C
30 minutes

D
60 minutes
Question 6
1 / -0

A body takes as much time to cover 10 m as a car takes to cover 25 m. What is the distance covered by the body if the car covers 1 km in the same time?

A
40 m

B
400 m

C
250 m

D
None of these
Question 7
1 / -0

Trees are planted on the side of a road keeping a gap of 30 meters between two consecutive trees. How many trees would a man driving a car the rate of 45 km/hr pass, if he drives for 45 minutes?

A
1025

B
1125

C
1126

D
1135
Question 8
1 / -0

A thief is spotted by a policeman at a distance of 200 m. When the policeman starts the chase, the thief also starts running. If the speed of the thief is 10 km/hr and that of the policeman is 12 km/hr, how far would the thief run before he is overtaken by the policeman?

A
2 km

B
10 km

C
1 km

D
None of these
Question 9
1 / -0

A train overtakes two persons who are walking at the rate of 2 km/hr and 4 km/hr respectively, in the same direction as that of the train. The train passes them completely in 9 and 10 seconds respectively. Calculate the length of the train (in meters).

A
54

B
45

C
50

D
72
Question 10
1 / -0

The distance between two points A and B is 110 km. A motorcyclist starts from A towards B at 7 am at a speed of 20 km/hr. Another motorcyclist starts from B towards A at 8 am at a speed of 25 km/hr. When will they cross each other?

A
9 am

B
11 am

C
10 am

D
12 am
Question 11
1 / -0

Two trains start their journey at the same time from two stations, which are 200 km apart. If both the trains travel in opposite directions, they cross each other at a distance of 110 km from one of the stations. The ratio of their speeds is

A
11 : 20

B
9 : 20

C
11 : 9

D
11 : 10
Question 12
1 / -0

A monkey ascends a 120 m high greased pole, ascending 4 meters in the first minute and slipping down two meters in the next minute, repeating this process till he reaches the top. The time taken by the monkey to reach the top is

A
60 minutes

B
120 minutes

C
117 minutes

D
115 minutes
Question 13
1 / -0

A car travels from `A` to `B` at a speed of 40 km/h and returns back to `A` at a speed of 30 km/h. What is the average speed for the whole journey?

A
0 km/hr

B
34.2 km/hr

C
37.8 km/hr

D
75 km/hr
Question 14
1 / -0

The wheel of an engine, having a circumference of 25 decimetres makes 10 revolutions in 4 seconds. The speed of the wheel (in km/hr) is

A
16 km/hr

B
22.5 km/hr

C
32.8 km/hr

D
36 km/hr
Question 15
1 / -0

What does the slope of a distance-time graph represent?

A
Displacement

B
Velocity

C
Acceleration

D
Time
Question 16
1 / -0

The velocity-time graph for an object is shown below.

Calculate the distance covered by the object.

A
5 m

B
10 m

C
12.5 m

D
None of these
Question 17
1 / -0

Which of the following displacement- time graphs is not applicable?

A

B

C

D
Question 18
1 / -0

Consider the following graph.

During which interval is the acceleration of the particle positive?

A
OA

B
AB

C
BC

D
None of these
Question 19
1 / -0

A body is dropped freely into a river from a bridge at a height of 125 m. Find the time taken by the body to touch the water surface.

A
1 s

B
3 s

C
5 s

D
7 s
Question 20
1 / -0

A body is dropped freely from a building of height 10 m. The velocity with which it strikes the ground is

A
10 m/s

B
14 m/s

C
20 m/s

D
25 m/s