Distance

Q.

Two friends “a” and “b” start walking from a common point. A goes $20\mathrm{km}$ towards the northeast, whereas “b” goes $15\mathrm{km}$ towards the east and then $12\mathrm{km}$ towards the north. How far are “a” and “b” from each other?

Q. Name the device which is used to measure the distance travelled by a vehicle.

1. Speedometer

2. Odometer

3. Metre scale

4. Thermometer

Q. Driving at a speed of 60 miles per hour, how long would it take to drive 240 miles?

1. 5 hours
2. 4.5 hours
3. 3.5 hours
4. 4 hours

Q. Two points A and B are situated 60 km apart on a straight road. A vehicle travels from A to B in 3 h. It then halts for 1 h and takes 2 h to come back from B to A. Find the average speed of the whole journey.

1. 25 km/h
2. 24 km/h
3. 10 km/h
4. 20 km/h

Q.

Question 2 (iii)
Which of the following are not correct?
(iii) Distances between two cities are measured in kilometres.

Q.

A body is traveling in a straight line. It moves AB that is 5 m towards the east, BC that is 4 m towards noth-east while making 30^o with north and CD that is 7 m in the west direction. Calculate the resultant displacement. [2 MARKS]

Q.

How the force of attraction between two bodies varies with distance between them ?

1. none of these

2. Force is directly proportional to the square of the distance.

3. Force is inversely proportional to the square of the distance.

4. Force is inversely proportional to the distance.

Q. Which among the following is the unit of distance?

1. Metres
2. Kilometres
3. Hours
4. Kilograms

Q. Distance travelled per unit time is called ___.

1. velocity
2. acceleration
3. mass
4. speed

Q. What is an odometer? [1 mark]

Q. Identify the type of motion from the given $\text{distance-time}$ graph.

1. Non uniform motion
2. The given distance-time graph is not possible.
3. Uniform motion
4. Rest

Q. If an airliner is flying east at 400 miles per hour, what distance will it have travelled after 3 hours?

1. 133.33 miles
2. 4, 000 miles
3. 800 miles
4. 1, 200 miles

Q. Which of the following statements are correct when we compare the motion of a car with the motion of a bullock cart?

1. Speed of the car is less, as it covers more distance than the bullock cart in a given time.
2. Speed of the car is more, as it covers more distance than the bullock cart in a given time.
3. Speed of the car is more, as it covers less distance than the bullock cart in a given time.
4. Both car and bullock cart always travel at the same speed.

Q. Identify the type of motion from the given $\text{distance-time}$ graph.

1. Uniform motion
2. Non uniform motion
3. Rest
4. The given distance-time graph is not possible.

Q.

We take a one-meter rod and mark 4 points on it such that each segment is of equal length.

What is the length of the line segment OA?

1. 20 cm

2. 2 cm

3. 2 m

4. 2000 mm

Q. If an airliner is flying east at 400 miles per hour, what distance will it have travelled after 3 hours?

1. 1, 200 miles
2. 133.33 miles
3. 800 miles
4. 4, 000 miles

Q.

In CGS unit :

1. C²m^-3 N^-1
2. C^-1m² N^-2

3. Mass is measured in grams.

4. Time is measured in seconds.

Q. A car moving at 10 m/s skids 2 m with locked brakes. How far will it skid if speed is 20 m/s?

1. 6 m
2. 10 m
3. 8 m
4. 12 m

Q.

The S.I unit of distance is kilometre.

1. True

2. False

Q. Ritu wants to measure her height. The unit of length that she can use conveniently is:

1. km
2. m
3. cm
4. mm

Q.

In order to cover a certain distance in a shorter time span, the object should have a greater _________.

1. mass

2. speed

3. time period

4. frequency

Q. For a moving particle, what does decrease in displacement with time mean?

1. The acceleration of the particle is approaching zero.
2. The particle is moving with uniform speed.
3. The particle is moving towards its initial position.
4. The particle is moving with nonuniform motion.

Q.

Which physical quantity is used to describe how far a body has travelled?

1. Mass

2. Dimension of the object

3. Time

4. Length

Q.

What could be the numerical ratio of displacement to distance?

Q.

In which of the following cases of motions, the distance moved and the magnitude of displacement are equal ?

1. The Earth revolving around the Sun

2. A car moving on a straight road

3. A pendulum moving to and fro

4. A car moving in a circular path

Q. The numerical ratio of displacement to distance for a moving object is:

1. Always less than 1
2. Always equal to 1
3. Always more than 1
4. Equal or less than 1.

Q. For a moving particle, what does decrease in displacement with time indicates ?

1. The particle is moving towards its initial position
2. The acceleration of the particle is approaching zero
3. The particle is moving with uniform speed.
4. The particle is moving with uniform motion.

Q.

In which of the following cases, the distance and the magnitude of displacement are equal ?

1. A car moving on a straight road
2. A pendulum moving to and fro
3. The Earth revolving around the Sun
4. A car moving in a circular path

Q.

The physical quantity, that is generally used to describe how much a body has travelled is __________.

1. mass

2. temperature

3. time

4. length

Q. Driving at a speed of 60 miles per hour, how long would it take to drive 240 miles?

1. 4.5 hours
2. 4 hours
3. 3.5 hours
4. 5 hours