Question

When spaceship is moving with uniform velocity of 600 km/s for next 45 seconds
and decreases the velocity to 300 km/sec, the total distance travelled by the
spaceship in one minute is​

Answer 1

Answer:

31500

Explanation:

here divide it into two first so

here at 600km/s in 45 sec

so27000 km in 45 sec

and 4500km in 15 sec

so total 31500 km in one min

Answer 2

Explanation:

Accelearion= 300/45=20/3

s=ut+1/2at2

600X45+1/2X20/3X45X45

ANSWER=33750KM