# Average Speed

## Trending Questions

**Q.**

If a car travels a distance of 100 km and comes back in 5 hours. Find the average speed of the car.

10 km/h

20 km/h

40 km/h

80 km/h

**Q.**A car travels with a speed of 30 km/h for 60 min and then with a speed of 40 km/h for 30 min. Find the total distance travelled by the car.

- 55 km
- 45 km
- 52 km
- 50 km

**Q.**

If a bus travels 160 km in 4 hours and a train travels 320 km in 5 hours at uniform speeds, then the ratio of the distance travelled by them in one hour is:

- 1 : 2
- 4 : 5
- 5 : 8
- 8 : 5

**Q.**

36 km/hr can be represented as:

30 m/s

40 m/s

20 m/s

10 m/s

**Q.**

An auto travels with a uniform speed 'u' for the first half duration and the next half duration with a uniform speed 'v'. Find its average speed.

- u+v2
- u−v2
- 2uv
- uv

**Q.**

A train covers first 140 km in 2 hours, next 180 km in 3 hours and the last 40 km in 1 hour. Find the average speed of the train.

**Q.**

36 km/h =

m/s

**Q.**

Time is a

**Q.**Sohail cycles on a circular track in anticlockwise direction as shown in figure. He travels with a speed ‘V’ to cover the path AB, next with speed ‘2V’ from B to C and with a speed of ‘3V’ from C to A. What is his average speed for the total journey?

- 2V
- 6V
- 3V
- V2

**Q.**A boy walks from his house to school at 2.5 kmph and arrives 12 minutes late The next day he walks at 4 kmph and reaches the school 15 minutes earlier What is the distance from his house to school?

- 2 km
- 2.5 km
- 3 km
- 3.5 km

**Q.**By walking at 34th of his usual speed, a man reaches office 20 minutes later than usual. What is his usual time?

- 30 minutes
- 60 minutes
- 50 minutes
- 70 minutes

**Q.**

A racing car covered 2 rounds of track in 5 minutes, the next 4 rounds in 8 minutes and the last 4 rounds in 7 minutes. Find the average speed of the car. (Length of the track is 4 km)

140 kmh

100 kmh

120 kmh

160 kmh

**Q.**

It was a rainy day in Bangalore. Rohit was sitting besides the window when he saw a lightning. He started his stop watch. He found that after 22 seconds of lightning its roaring was heard. Calculate the height of the clouds which caused this lightning. Given, speed of light = 3×108^{ }ms−1 and speed of sound = 340 ms−1.

- 8.5 km
- 10 km
- 7.5 km
- 5 km

**Q.**An insect moves along the sides of a wall of dimension 12m×5m, starting from one corner and reaches the diagonally opposite corner. If the insect takes 2s for its motion, then find the ratio of average speed to average velocity of insect.

- 13:5
- 17:12
- 12:5
- 17:13

**Q.**An object travels at 50 ms−1 for the first 2 seconds and travels at 70 ms−1 for the next 2 seconds. What is its average speed for the first 4 seconds?

- 50 ms−1
- 56 ms−1
- 70 ms−1
- 60 ms−1

**Q.**If the speed of a body is 5 m/s. Find the time it would take to cover a distance of 6 km.

- 1 h
- 13 h
- 23 h
- 15 h

**Q.**

A particle is moving from point A to point B and covers the entire distance of 10 km in just 2 minutes. What would be the speed at which the particle was traveling?

53.3 ms−1

83.3 ms−1

90.3 ms−1

80.3 ms−1

**Q.**If the speed of a body is constant then it

- might be accelerated
- must be accelerated
- has a constant velocity
- cannot be accelerated

**Q.**

An auto travels with a uniform speed u for the first half duration and the next half duration with a uniform speed v. Find its average speed.

2uv

uv

**Q.**

A 60 m long train moving on a straight level track passes a pole in 5 s, find the speed of the train and the time it will take to cross a 540 m long bridge.

25 m/s, 30 s

13 m/s, 40 s

12 m/s, 50 s

15 m/s, 65 s

**Q.**

A satellite is orbiting earth at a distance of 42000 km in a circular orbit. It completes one revolution in 24 hours. Calculate its linear speed.

10990 km/hr

10890 km/hr

11000 km/hr

11880 km/hr

**Q.**The chapter "Speed" has question no. 4 on page no. 12. Explain/Solve.

**Q.**If the speed of a car is 20 ms−1, what is the speed in km h−1?

- 72

**Q.**8988÷8÷4=?

- 561.75
- 4494
- 2247
- 280.875
- None of these

**Q.**

Arun boards a bus at 1:00 PM and gets off at 5:00 PM. He has travelled 360 km. What is the speed of the bus?

**Q.**

The speed of a car is 18 m/s. Express this speed in km/h.

**Q.**The chapter "Review 3" has question no. 1 on page no. 37. Explain/Solve.

**Q.**Anita was driving at a speed of 85.6 km per hour. If the road had a speed limit of 55 km per hour then by how much should she reduce her speed to be within the speed limit? [2 Marks]