Acertain car travels 20 km east then turns south for 13 km finally the car turns east again for 6 km

a^2+b^2=c^2

20km^2+13km^2=c^2

400km^2+169km^2=c^2

23.853720...km

Total distance

total displacement

Explanation:

Total distance moved by the car is total path length of the car

now similarly we will have

total displacement of the car towards East

total displacement of the car towards South

now net displacement of the car is given as

3.2x10^7

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19