A car travel from stop a to stop b

Asked by admin @ 23/08/2021 in Physics viewed by 316 People

A car travels from stop A to stop B with a speed of 30 km/h and then returns back to A with a

speed of 50 km/h. Find
(i) Displacement of the car.
(ii) Distance travelled by the car.
(iii) Average speed of the car

Answered by admin @ 23/08/2021

Answer:

Displacement is the shortest distance between the initial and the final position. Here the car travels from stop A to B and return to stop A. Thus, the displacement of the car is 0 m/s.

Explanation:

let the distance travelled by the car from stop A to B = x km. The car travel from A to B return back to B. Thus, total distance travelled = 2x km. Time while going from A to B = distance travelled / speed taken = x / 30 hours. Time while returning from B to A = x / 50 hours . Total time x / 30 + x / 50 = 8x/ 150

average speed = total distance / time taken

2x × 75 / 4x

average speed = 37.5 km/h

thus, total distance = 2x = 2 × 37.5 = 75 m

A hair dryer with a resistance of 9.6 ohms operates at 120 volts for 2.5 minutes. the total electrical energy used by the dryer during this time interval is

Asked by maham237 @ 13/01/2021 in Physics viewed by 1200 persons

Mind map for light reflection and refraction class 10

Asked by admin @ 23/08/2021 in Physics viewed by 1143 persons

A thief runs at a speed of 10m s

Asked by admin @ 23/08/2021 in Physics viewed by 1095 persons

The african cicada is the world's loudest insect, producing a sound intensity level of 107 db at a distance of 0.50 m. what is the intensity of its sound (in w/m2) as heard by someone standing 3.1 m away? express your answer in watts per meter squared.

Asked by maham237 @ 10/01/2021 in Physics viewed by 1095 persons

A 5.8 x 10 4 watt elevator motor can lift

Asked by maham237 @ 20/06/2021 in Physics viewed by 1080 persons

A car travel from stop a to stop b

Similar Questions

A car travels from stop a to stop b

A car travels with a uniform velocity of 25

When you are stopping your car for a traffic light

A car is stopped at a traffic light

A car travels 30 km at a uniform speed

A driver of a car travelling at 52 km

On a two lane road car a is travelling

If a car travels 2/5th of the total distance

A 1250 kg car is stopped at a traffic light

A father and his son was travelling in the car

When a car stops suddenly the passengers are thrown forward

A car starts from rest and travels for 5.0 s

In order to stop a car in shortest distance

A car travels half the distance with constant velocity

A car travelling south covers a distance of 8

Most viewed questions in Physics

Jeevandeep health and physical education std 10 answers pdf

Hc verma physics class 9 solutions of describing motion

How to leave nightmare land answer key

Base area and stability of some objects with different shapes

Which of the following statements about safe lifting are correct

Porous water-absorbing mass of fibers

Absorption of water by filter paper is due to

A composite wire of uniform diameter 3mm

At a distance l 400m from the traffic light

A rocket of mass m is launched straight up with thrust f⃗ thrust.

A hair dryer with a resistance of 9.6 ohms operates at 120 volts for 2.5 minutes. the total electrical energy used by the dryer during this time interval is

Mind map for light reflection and refraction class 10

A thief runs at a speed of 10m s

The african cicada is the world's loudest insect, producing a sound intensity level of 107 db at a distance of 0.50 m. what is the intensity of its sound (in w/m2) as heard by someone standing 3.1 m away? express your answer in watts per meter squared.

A 5.8 x 10 4 watt elevator motor can lift