Motion and Time Test

Result

Motion and Time Test - 5

Score
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out of -
Rank
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out of -

TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

A ball moves at 120 metres per second and strikes an object in three seconds. If it moves at the speed of 100 metres per second, how long will it take for the ball to strike the same object?

A
12/5 sec

B
9/5 sec

C
10/5 sec

D
18/5 sec

Solution

Total distance covered by the ball = 120 × 3 = 360 m
Now, speed of the ball = 100 m/sec
∴ Time taken = 360/100 = 18/5 sec

.
Question 2
1 / -0

A man wants to cover 50 km on his bicycle. His speed is 12.5 km/hr. After every 12.5 km, he takes rest for 20 minutes. How long will he take to cover the whole distance?

A
5 hours

B
4 hours 20 minutes

C
6 hours

D
5 hours 20 minutes

Solution

Speed = 12.5 km/hr
Distance to be covered = 50 km
Time required = 50/12.5 = 4 hours
Rest intervals = 20 minutes × 3 = 60 minutes = 1 hour (After the third stoppage, he will reach his destination.)
Total time = 4 + 1 = 5 hours
Question 3
1 / -0

On which of the following parameters does the time period of a pendulum depend?

A
Length of the thread

B
Speed

C
Weight of the pendulum

D
Height of the pendulum

Solution

The time period of the pendulum depends upon the length of the thread and it is constant for a particular pendulum.
Question 4
1 / -0

Total time taken = Time period x ________

A
Number of oscillations

B
Total distance

C
Average speed

D
Number of hours

Solution

We know,
Time period = Total time taken ÷ Number of oscillations

So, Total time taken = Time period x Number of Oscillations
Question 5
1 / -0

A simple pendulum takes 15 seconds to complete 5 oscillations. What is the time period of the pendulum?

A
15 sec

B
5 sec

C
3 sec

D
45 sec

Solution

Time taken to complete one oscillation = 15/5 = 3 sec