Uniform Speed and Variable Speed

Q.

What is speed? Name its types.

Q. When a body covers equal distances in equal time intervals, it is called _____________.

1. Average speed
2. Uniform speed
3. Variable speed
4. None of the above

Q. A man sees a train passing a bridge 1 km long. The length of the train is half that of the bridge. If the train clears the bridge in 2 minutes, then the speed of the train in km/hr is

1. $x=35$
2. $x=45$
3. $x=40$
4. $x=65$

Q.

A train travels 40 km at a uniform speed of $30km{h}^{-1}$. Its average speed after travelling another 40 km is $45km{h}^{-1}$ for the whole journey. Find its speed in the second half of the journey.

1. $60km{h}^{-1}$

2. $21km{h}^{-1}$

3. $90km{h}^{-1}$

4. $45km{h}^{-1}$

Q.

A bus travels one third of the distance with a speed of $12km{h}^{-1}$ and the remaining distance with a speed of $20km{h}^{-1}$. The average speed of the bus is ______ $km{h}^{-1}$

1. $14$

2. $20$

3. $12$

4. $16.4$

Q. A bicycle is moving 25 meters in every 10 seconds. Find the uniform speed.

1. $2.5m/s$
2. $0.25m/s$
3. $5m/s$
4. $250m/s$

Q. An object moving with constant velocity is said to be in uniform motion

1. False
2. True

Q.

What is $3$ miles per minute expressed in feet per minute $?$ Recall that $1$mile is $5,280$ feet.

$3$ miles per minute is equivalent to what feet per minute $?$

Q.

A train travels 40 km at a uniform speed of $30km{h}^{-1}$. Its average speed after travelling another 40 km is $45km{h}^{-1}$ for the whole journey. Find its speed in the second half of the journey.

1. Shekhar's run rate was 16 runs per over

2. Nitish's run rate was 17 runs per over

3. Nitish's run rate was more than that of Shekhar

4. All of these

Q. A car is travelling at a constant speed of 15km/hr. Burst the distance covered by it at the end of each hour.

1. 15 km
2. 30 km
3. 25 km
4. 35 km
5. 45 km
6. 55 km
7. 60 km
8. 75 km

Q. A body is said to be in non uniform motion, if it covers unequal distances in equal intervals of time.

1. True
2. False

Q. If a man walks at an uniform speed of 10m/s, then the distance covered by him after 20 seconds is 100m.

1. True
2. False