CLASS-8

BOARD: CBSE

Mathematic Worksheet - 6

TOPIC: Time, Speed and Distance

For other ** CBSE Worksheet for class 8 Mathematic ** check out main page of Physics Wallah.

**1) A train overtakes two persons walking along a railway track. The first one walks at 4.5 km/hr. The other one walks at 5.4 km/hr. The train needs 8.4 and 8.5 seconds respectively to overtake them. What is the speed of the train if both persons are walking in the same direction as the train?**

A) 81km/hr

B) 72km/hr

C) 78 km/hr

D) 99km/ hr

**2) A train travelling at a speed of 45km/hr reaches Chennai from Howrah (a distance of 180 km). On the return journey its speed is 36km/hr. Find the average speed of the train in the two journeys.**

A) 40.5km/hr

B) 37 km/hr

C) 39km/hr

D) 40km/hr

**3) A man is travelling by a car at40km/hr. After every 80km, he rests for 20 mins. How long will he take to cover a distance of 240 km?**

A) 6hr 40 mins

B) 6hrs

C) 6hr 20 mins

D) 7 hrs

**4) A motor car starts with a speed of 70km/hr with its speed increasing every two hours by 10 kmph. In how many hours will it cover 345 kms?**

A) 9/4 hrs

B) 4hrs 5mins

C) 9/2 hrs

D) can’t be determined

**5) Walking 7/6 th of his usual rate, a boy reaches his school 4 mins early. Find his usual time to reach the school.**

A) 40 min

B) 32min

C) 28 min

D) 48 min

**6) A man travels 100 kms in 5 hrs and another 200 km in 15 hrs. Find the average speed.**

A) 15 km/hr

B) 10 km/hr

C) 20 km/hr

D) none of these

**7) A train 140m long is running at 60km/hr. In how much time will it pass a tunnel 260m long?**

A) 18 sec

B) 24 sec

C) 30 sec

D) 15 sec

**8) A 400m long train is running at the speed of 60km/hr. It crosses a bridge of length 800m in:**

A) 20/3 seconds

B) 20 seconds

C) 2 seconds

D) 72 seconds

**9) A boy walks from home at 4 km/ hr and reaches school 5 mins late. The next day, he increases his speed by 1 km/hr and reaches 5/2 minutes early. How far is the school from his home?**

A) 7/2 km

B) 3 km

C) 5/2 km

D) 2 km

**10) In covering a distance of 30 km, Hari takes 2 hours more than Ram. If Hari doubles his speed, he would take one hour less than Ram. Hari's speed is:**

A) 5 km/ hr

B) 7.5 km/ hr

C) 6 km/ hr

D) 6.25 km/ hr

**11) A train with the speed of 36 km/hrs, crosses a pole in 30 seconds. The length of the train is:**

A) 300meter

B) 1800 meter

C) 600 meter

D) none of these

**12) A train travelling at 90km/hr, is able to pass a telegraph post in 10 seconds. The length of the train is:**

A) 250 meters

B) 240 meters

C) 242 meters

D) 245 meters

1) (A)

2) (D)

3) (A)

4) (C)

5) (C)

6) (A)

7) (B)

8) (D)

9) (C)

10) (A)

11) (A)

12) (A)