A rocket with a mass of 500 grams is launched straight up. It achieves a velocity of 20.0 m/s in 2.00 seconds. The average thrust force of the engines on the rocket is
7.50 N.
9.90 N.
12.0 N.
13.5 N.
As we learnt
Power if the force is constant -
- wherein
Option 1)
7.50 N.
This option is incorrect
Option 2)
9.90 N.
This option is correct
Option 3)
12.0 N.
This option is incorrect
Option 4)
13.5 N.
This option is incorrect