# Speed

## Trending Questions

**Q.**Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minutes 50 seconds and then turns around and jogs 100 m back to point C in another 1 minute. What are Joseph’s average speeds and velocities in jogging (a) from A to B and (b) from A to C?

**Q.**Distance travelled per unit time is called ___.

- velocity
- acceleration
- mass
- speed

**Q.**

Is time scalar quantity or vector? How?

**Q.**

define instantaneous speed

**Q.**

How far will a car travel in $25min$ at $12m/s$?

**Q.**The length of a pendulum is measured as 20.0cm . The time interval for100 oscillations is measured as 90s with a stop watch of 1s resolution. The accuracy in the determination of g is

**Q.**

A car is moving at a speed of $30\mathrm{m}/\mathrm{s}$ Find the distance covered by the car in $2\mathrm{s}$

**Q.**

A car takes 4 hours to travel a distance of 320 km. What is its average speed for the journey?

60km h−1

80km h−1

40km h−1

100km h−1

**Q.**

A car travels at a speed of 50 $\frac{km}{hr}$ for 30 min, 40 $\frac{km}{hr}$ for the next 15 min, and 60 km/h for the next 60 min. Calculate the average speed of the car

26.12 $\frac{km}{hr}$

34.59 $\frac{km}{hr}$

43.95 $\frac{km}{hr}$

54.29 $\frac{km}{hr}$

**Q.**The average speed of an object over a given time duration is 6m/s if it travels first half of the duration with a constant speed 4m/s its speed during the next half duration is

**Q.**

A train passes over a 200 m long bridge in 10 sec. The length of the train is 100 m. The speed of the train is

$10\frac{m}{s}$

$30\frac{m}{s}$

0.86 $\frac{m}{s}$

1.42 $\frac{m}{s}$

**Q.**

**Q.**

The distance travelled by an object in unit time is known as __________.

Displacement

Time

Position

Speed

**Q.**

If a body travels for time t with speed v_{1} and then it further travels for time t with speed v_{2}, find the average speed.

**Q.**

A train of length 180 m approaches a tunnel of length 620 m. How long will it take the train to pass completely through the tunnel at a speed of 54 km/h?

53.33 seconds

53.33 minutes

5.333 seconds

533 seconds

**Q.**A car covers 100km in 3 hours, the speed of the car is

- 32
- 33.33
- 34
- 30

**Q.**Distance travelled by an object in unit interval of time is known as:

- Distance
- Time
- Displacement
- Speed

**Q.**

What kind of motion does the minute hand of a clock show?

Rectilinear motion

periodic motion

non-periodic motion

random motion

**Q.**A car travels a distance of 400 km in 8 hr. Its average speed is:

- 50 kmph
- 60 kmph
- 65 kmph
- 70 kmph

**Q.**

What is the speed of a body which is at rest?

Position needs to be known to find the speed

Definitely zero

Definitely non-zero

Can be zero or non-zero

**Q.**A truck covers first 80 km in 2 hours, and the remaining 60 km in the next 3 hours. What is the average speed of the truck?

- 32 km h−1
- 34 km h−1
- 28 km h−1
- 36 km h−1

**Q.**A man walks at a speed of 5 km/hr for 20 minutes. He runs back the same distance at a speed of 20 km/h. How much time does he take to run back?(In minutes)

- 5

**Q.**

Which one of the following has the maximum and the least average speed?

- Sanjeev moving with 12 km/h
- Rajeev running with 5 m/s
- Kabir moving with 150 m/min

**Q.**

Speed of cars is usually measured in the unit ______.

**Q.**

State true or false:

Distance=speedtime

True

False

**Q.**

Which of the following physical quantities can be measured in metre per minute?

Distance

Displacement

Time

Speed

**Q.**

A car travels 36 km in 2 hours. Its average speed is:

None of these

18 m/s

36 m/s

5 m/s

**Q.**A car is travelling from point A to point B which are 10 kilometre apart. It takes 2 hours for the car to travel this distance. Speed of the car is ______.

- 4 km/hr
- 5 km/hr
- 5.2 km/hr
- 3 km/hr

**Q.**

The odometer of a car reads $2000\mathrm{km}$ at the start of a trip and $2400\mathrm{km}$ at the end of the trip. If the trip took $8\mathrm{h}$, calculate the average speed of the car in $\mathrm{km}{\mathrm{h}}^{-1}$ and $\mathrm{m}{\mathrm{s}}^{-1}$.

**Q.**A boat travels 30 km in 6 hours. Calculate the speed of the boat.

- 4 km h−1
- 5 km h−1
- 6 km h−1
- 8 km h−1